Half Life 2 and Doom 3 are really fun in multiplayer, but it's a shame no ppm support. KDR_11K that mod is the best btw: http://wip.global-illusions.com/d3tut/quick%20Tutorial%20-%20Doom3_PPM.htm A character selection screen would rock!
Doom 3 has no support OOTB either and until I get my ass back in gear the current PPM support mod lacks any GUI for model selection which some might find unappealing. Reminds me, Vahl and Teddy still haven't released their models.