This is Bitcointalk. Altcoin wallets can be discussed in their respective ANN threads on the altcoin board already.
No, you are not right. People, also Bitcointalk forum members are using altcoins more and more. So altcoin wallet board is exactly what this forum need.You can keep saying that until the cows come home, but if you do you're just going to make yourself a target of ridicule.
You're also making a claim, specifically that bitcointalk members are more interested in shitcoins than they previously were. You sure about that? Even if you're gauging said interest by an increase in activity in the altcoin section, it could be due to bounty hunters becoming more active. That entire section (including all the subsections) has been a cesspool and a haven for the worst posters this forum has. That being the case, I don't think there needs to be another board added for shitcoin wallets.
Also: Theymos would never go for it, especially since he's rejected much better suggestions that have been made.