I just find it amazing that this issue seems to divide people so strongly. Maybe I've been skipping some threads (okay, probably), but I don't think I've seen such a complete division of opinion since the last time I read a graphics thread.
Immersion is a tricky thing to gauge for a game that primarily consists of text. If this helps some people get into the game, then I say great. I'll probably even try it, but I won't be shocked if I find myself turning it off again before spring training is over.
As for Markus' coding time, I imagine he's pretty good at setting his priorities. Look how many people love his game enough to fight over it.