After Erebor is reclaimed, does Gloin spend some of his share of the gold on helping budding inventors/innovators/etc financially? Sort of Dwarven venture capitalism?

Absolutely. I believe they all do, the remaining members of the Company. They would all invest in new prospects such as inventions, schools (guild or otherwise), guilds dear to their hearts (Dori has sunk A LOT into the Weavers and the Scribes, fyi), hospitals and care facilities, etc etc etc. 

The share that each received would have been far less than that originally agreed upon, imo – I’m basing this upon this quote, from Chapter 18, “The Return Journey”:

The others remained with Dain; for Dain dealt his treasure well. There was, of course, no longer any question of dividing the hoard in such shares as had been planned, to Balin and Dwalin, and Dori and Nori and Ori, and Oin and Gloin, and Bifur and Bofur and Bombur—or to Bilbo. Yet a fourteenth share of all the silver and gold, wrought and unwrought, was given up to Bard; for Dain said: “We will honour the agreement of the dead, and he has now the Arkenstone in his keeping.”
Even a fourteenth share was wealth exceedingly great, greater than that of many mortal kings. From that treasure Bard sent much gold to the Master of Lake-town; and he rewarded his followers and friends freely. To the Elvenking he gave the emeralds of Girion, such jewels as he most loved, which Dain had restored to him.
To Bilbo he said: “This treasure is as much yours as it is mine; though old agreements cannot stand, since so many have a claim in its winning and defence. Yet even though you were willing to lay aside all your claim, I should wish that the words of Thorin, of which he repented, should not prove true: that we should give you little. I would reward you most richly of all.”
“Very kind of you,” said Bilbo. “But really it is a relief to me. How on earth should I have got all that treasure home without war and murder all along the way, I don’t know. And I don’t know what I should have done with it when I got home. I am sure it is better in your hands.”

So, Dain spread the treasure a LOT further than fourteen measly shares, as we see. Even so, I am certain that he would have rewarded the Company incredibly richly.

I consider that Dwarves such as Bombur and Bofur (poor as church mice all their lives) would have been initially at something of a loss as to what to do with their newfound wealth. I think that they would have turned to Gloin, as the most financially-savvy Dwarf they know, to help them use it wisely and for the benefit of all.

Gloin would have considered what is important to them, naturally. He himself would already be investing in mines, in apprentice-schools, funding scholarships for Firebeards and war-orphans and speculating in new inventions.

He would have helped them make investments and contributions towards Miner’s Hospitals and ongoing care for those Dwarves who had been permanently affected by war. He would have helped them throw money towards Broadbeam-specific schools, towards toy-making apprentices and journeymen and women, towards the culinary arts.

Basically, I can see Gloin helping his friends invest their wealth wisely, in ways that both increase the health, productivity and happiness of their people, and assure a decent little profit (LITTLE profit – no such thing on such vast numbers, lol – they’re all fabulously wealthy).

A bunch of naked asks show up in your askbox. You don’t know how asks can be naked but they’re in your askbox and everything in your askbox is naked tonight, so they must be too. You eye the asks warily.

RIGHT. 

HEADCANON: GLOIN IS SOMETHING OF A MATHEMATICAL WIZ. HE CAN ADD SEEMINGLY MAGICAL NUMBERS IN HIS HEAD AND HARDLY EVER MAKES MISTAKES. THIS COMES FROM KEEPING ACCOUNTS IN A WORLD WHERE THERE IS NO SUCH THING AS A CALCULATOR. HE CAN LEISURELY RUN HIS FINGER DOWN THE PAGE OF A LEDGER AND WRITE THE TALLY AT THE BOTTOM, NO MATTER HOW HUGE OR VARIED THE FIGURES. 

(MY GREAT-GRANDAD WAS A CLERK AND COULD DO THE SAME THING, IT WAS SORTA INCREDIBLE TO WATCH)

Is messy hair a Durin thing? Like the nose and the angst?

LOL, the hereditary Durin angst! very accurate!

I don’t actually think so – Before death, Thorin’s hair was remarkably photogenic well-behaved. It’s only since his death that he’s been struggling with it!

Fili’s hair is lovely, as we all know. Thrain’s is enviable. Like, hellooooo sir. 

And Thror’s should be enshrined as hair-and-beard perfection, tbh. 

(I bet that this is all Hrera’s painstaking work, though…)

Even the extended Durin line we see in the films has hella hair. I mean, Balin’s is plain as plain – but pure white and absolutely lovely. Dwalin might be bald, but it is long at the back – also beard respect. Oin’s hair is FABTACULAR, curly braids ftw!! And Gloin’s – welp. Nuff said. My fave hot dad also has my fave hair and beard. And both are A GLORIOUS ABUNDANCE. 

And then, ofc, there is the fiery magnificence that is Dain. 

The only dwarf of the Durin line we see with fairly scruffy hair is Kili, I suppose. And even then it’s not scruffy-scruffy, more “movies-scruffy” (it appears that Dwarves do not frizz even in wet weather. Bastards). 

But Gloin being confused over Thorin calling Gimli his star and being like “Thorin NO he’s too young and too closely related to you besides I thought you were still hung up on Mr. Baggins!” and Thorin trying to explain that no Gimli is a son of his heart and yes he does love Mr. Baggins (while in the corner Frerin’s totally losing it as Fili and Kili pretend to defend their little cousin’s honor against their uncle)

BAAAAHAHAHAHAHAHAHAHAHAHA

Oh poor Gloin. *pats him* ILU baby. You’re my fave hot dad. 

(Nori is taking bets on what will get him to explode. Gloin is very clever and has mellowed somewhat with age, but he’s still himself!)