3) I see no difference in tiles between the standard locations and the gnomish mines locations. I think the tiles should reflect the mines as being rocklike.
4) When crashing out of the program, nethack should be able to recover your latest state but I think that the option is not selectable in the startmenu forcing you to start all over again.
Marco, I'm sorry. Cause you were asking Dzz, not me, but the thing is - Nethack has few unique features that seem to be its "Holy Writ".
First - the appearance of walls and stuff. It's still an ASCII game, heavely relying on the gameplayer's imagination, and training it. Replacing ASCII art with pixel art is fine, but introducing new type of wall is... oh, my, it's blasphemy, I'm afraid.
Second - I, off course, would definitely love not having my game lost because of batteries dying. But recovering last state, imho, is not going to work, because it would open the door for cheating:
"Oh, I run into a bunch of Sandworms while I'm paralyzed, so I think I'll turn the GP2X off in the midgame (let's pretend that the batteries run out) and then restart from the last recovered moment".
I'm sorry, but Nethack's phylosophy is: Dead is dead, and there's no turning back, no restoring the game.
However, I agree that loosing the game because of dead batteries is lame and miserable, so, maybe it's worthwhile to work on a better warning system - a system to actively warn a player that the battery is about to die. Maybe even forcing save&quit when the battery gets on "empty" level +10 minutes. Just an idea...