Lou: Like I said - I am not a game developer. However, as a game player, I would rather play 10 Infinity games developed in the indie world and sold between $5 and $15 instead of any of the games mentioned on the Gambyro site at retail. Its really not about a the most up to date engine its about a fun game at a reasonable price. I am currently playing Arena - talk about a chore - but its free and it fun.
The engine doesn't determine the quality of the game. Although in the case of the Infinity engine it does at least go a long way towards determining the kind of game that would be made with it (Gamebryo was used in everything from RTS to RPGs and FPS). So that does at least make some sense out of what you're saying.
How people fail to grasp that it's perfectly possible to come up with a far superior isometric RPG engine more than a decade after Infinity is beyond me though.