Instead this key is mapped to automaticaly walk through the already boring dungeons. Honestly thats pretty sad, the game is so dull that it has to play itself. I cant say I've ever had to "auto-explore" in Incursion(or any other game for that matter), as theres always something unexpected around the next corner to keep me on my toes.
Not that I really want to restart the flames, but this one point in particular I really felt like talking about.
Now, I'm hardly unbiased (I've won Crawl a couple times and come close a bunch more, so obviously I'm willing to dump countless hours into it) but the feature that you mock stands, in my eyes, as one of Crawl's most useful. It, along with being able to call up a list of everything you've seen in the dungeon (and auto-walk to it) cuts down ridiculously on wasted keypresses and time. Also cuts down on accidental deaths by walking into something nasty.
Now, I've only really played Crawl and Nethack extensively, but what I'd reccommend for Crawl over Nethack is twofold:
1) In Crawl, in 90+% of cases when you die, it's your fault. Either because you didn't run away soon enough, or didn't drink a potion or read a scroll. Sure, every so often you run into a goblin with a dagger of distortion on D:1, but I'd say it's the exception, not the rule.
Nethack - You fall into a pit! The pit had spikes! The spikes were poisoned! The poison was fatal...
I like being able to look back at a death and be able to say "If only I'd done it like this instead" as opposed to "well, that sucked."
2) You could actually win Crawl without spoilers.
Nethack... well, I'm sure it _could_ be done... but I highly doubt it. I've won (once) but there's no way I could've done it without learning all the tips and tricks of Nethack through spoilers first.
I also really like Crawl's system for mutuations and gods, but I've prattled on long enough.
Incursion, when I played it (a while ago - need to download the newest version) showed a lot of promise, but was hampered by broken features - which may have been fixed by now.