Really? And what are those other "the better multiplayer shooters" in your opinion?
The ones I liked were Killing Floor or Prejudice 8 (as in only MP shooters, SP games with great MP is a whole different list wih many great titles). What I never liked was the whole "Red Orchestra" family tree, Counterstrike (yeah, sorry, I never liked it. HL 1 was way better MP in vanilla ;-P) I usually don't play MP shooters. Never liked TF classic of TF 2 (though I like the style of the latter). Actually, I didn't bother much with any of the Source Mods.
Well, that's fair. Never played Prejudice 8, but I definitely believe that Killing Floor is a great multiplayer game. Counterstrike never excited me either, but I do like TF2, especially the style of it. Now it's slightly fucked up, but oh well.
Anyway, I think that Dino D-Day will continue being the game that "no one" wants, it's a fun quality.