Yes, this is mostly a matter of level design even in T1 and T2 but especially in TDM if it is to be not central character dependent. Seems to me that the minimum things needed to change from man to woman player are the mantling grunts/death shouts etc, and a girly weapon arm/limb model, etc. Perhaps the main character could be given unisex hands etc, not big and hairy, so could be taken either way. The rest is storyline apart from special thought speech such as 'must be a way up there...' though I think these are mostly regarded as training aids and not popular with everyone. Or have I missed out anything? I'm looking forward to a diverse range of storylines and characters in TDM missions! Maybe you should not emphasise the character you put in the TDM campaign so he's(she's) more bland and forgettable (the man with no name) (Ah! I see your smilies work for me in Opera 6; they don't at ttlg)