This shouldn't be an issue for "waiting" - 100 turns isn't that long so you just end up killing some time - but it should be possible to interrupt movement (e.g. w#), since otherwise you have to walk back manually.

Or, you should be able to go "w*" or something, and then get a cursor which you can move to any destination on the current level.

There already is double-click.

In the particular case of w. and w>, I think this is just a really unfortunate keymapping and instead of building in interrupts, it might just be better to not have two different w* commands mapped to the same key.

That's an ethnocentric comment :P In my Spanish keyboard, the . and > keys are very far apart.

Not saying that the keymapping shouldn't be changed if it's really problematic in the keyboard layouts of many users, but it's worth keeping in mind that whatever helps in one layout might be a nuisance in another.