Something very similar is planned already, as for the sprites work, thanks Mago (the lead artist) is a great guy who makes awesome sprites (check the NPC characters in KDev if you don't believe me), I made some of the damage skins too, it was a hell of a work but it was fun to come with interesting ideas for them <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->.
As for your comments, for KA we will be using some Hexen resources for it, KMod needs you to own the original Hexen game, but KA will allow any user of Doom, Heretic and Hexen to play <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->. We would like to keep the original sounds, maybe change some of them and add a lot of new ones for new weapons, enemies and whatnot <!-- s:) --><img src="{SMILIES_PATH}/icon_smile.gif" alt=":)" title="Smile" /><!-- s:) -->. If you want, you can try KMod and/or KA in windows (I remember you posted something like "I can't run DosBox"), DOS it's not needed at all <!-- s;) --><img src="{SMILIES_PATH}/icon_wink.gif" alt=";)" title="Wink" /><!-- s;) -->.