Why arent more people playing IOM Mod

Hello,



I just stumbled across this Mutator/Mod Immersion Overhaul Mutator.

http://forums.tripwireinteractive.co...ad.php?t=92324



And i wondered why people dont play it that much. It seems we can only get a couple of people for weekend events. It's a shame, it's a really good mod and really awesome.