You know what I want. A true "Last man standing" Mod.
HLDM has just way to much emphasis on total kills. No real time is spent on skill. Hence the killbox craze. You do not know (or maybe you do) how many times i hear some crybaby complain about the lack of items. "This is boring" or "Where is everything, I can't find enough ammo?"
If people were forced to use stalking and hunting skills in a game to remain alive to the end to win, that would be so much the better.
Also, to prevent camping techniques degrading the fun to ZERO, you would need to place a total weapon strip over the map so that every few minutes you would be forced to move out into the open to get more.
I could just imagine a game of campers.. "You gonna hide all day?" "you first, chicken", "Am not" "are too"..
The only way a mod of this type could work would be to force people out. In the end though, I feel that it would be the all time best "Bragging Rights" mod out there.. People always talk about CS as if it were special, but just imagine claiming to have won Blah.Blah amount of last man standing rotations. 
[addsig]