pfft, PC gamers have had an unquenchable thirst for more performance for well ... since the first networked game. this includes things like faster mice, more precise mice, better keyboards and or different keyboard like devices, etc etc.
those gamers who chose not to keep up were usually just fodder. sure, i knew of plenty of guys in tribes that kicked my ass on inferior equipment (nutz|hondurass played w/o 3d acceleration for awhile) but that was few and far between.
whats 40-60 bucks for a better setup to a gamer? nothing.
p.s. the merc sucks balls but the fang is actually a pretty killer device. i have used many 'alternative' devices including the 'claw' and the n50 and n52 speed pads. the fang smokes them all by a long shot.
*edit* looks like they have a new merc keyboard with the fang layout built in. so i retract that, the new one is probably pretty good the old ones blew ass though.
That is one of the main reason why many people get a console. They don't have to worry about upgrading later on. They pick it up and they have almost exactly what the guy down the street and the guy on the other side of the country has.
The merc still does suck. I don't think they've ever had any other versions other than what they currently have. It has always had the side area like the fang.