i'm still here
Unfortunately i've no so much time to do such a project. i still do icon from time to time for some request from the WHDLoad team but no more.
I think you can already use icons from http://www.amigagames.com/gameicons.info/
(all are in 120x96 pixels) and of course you can freely use my Pygmicons (another pack is available on aminet, if RCK is interested he can add it to the download page)
As most icons use Title screen + ingame screen they shouldn't differ from (re)doing a new one using HOL pic.
Making a different drawer for each game sound a bit crazy for me as it should ask more time and i don't think it's so useful as lot of ppl use different drawer. Well it's just my opinion.
Anyway there's still lot of games that need a good icon, why not start with them.