I did a bunch of new graphics for the last version of Helherron(2.04). Mostly PC icons...a few trolls, some orcs, some lizardmen, a dwarf(with two axes), some halflings, elves, etc. and also some new race and class 'information' pics(the new Shaman class, a new troll and orc etc.) for the character creation screens, as well as a bunch of new terrain icons and a few monsters and a bunch of new NPCs. I also did that rushed(and kind of messed up) title/splash screen(had like a few days to do the whole thing).
Unfortunately the last version was plagued by some almost game-breaking bugs(for which there were workarounds but no patches, save for the bug preventing you from entering one of the coolest dungeons...Tiki's island, for which there was no apparent workaround). Still the game remains one of the most tactically satisfying RPGs ever. Was better than Nahlakh in many ways.
Of course I disagree with you about 4 PC vs. 8 PC parties. I find 4 person parties in RPGs to be kind of boring and battles even MORE long and drawn out than with 8 person parties where it is easier to dispose of massive hordes of enemies without having to grind/stall/reload etc. I think this is mostly a cosmetic/aesthetic issue though. I prefer being able to try out many if not all possible character builds in one go rather than having to replay the game many times or be overly broad in my character development(i.e. your "thief" must also be a "tank" and/or your "mage" must also be an "archer" or some such in 4 P.C. party-based games).