gkurtenbach, here's some tidbits which may or may not be helpful...
1.) Alt clicking a track's (or one of several selected) record arm button will cause the other tracks in the project to be disarmed.
2.) There's a setting in preferences to "always show full track panel on armed tracks." This is overridden by folder compaction, and you can accidentally click the record arm button on such a track, so it might pay to use a macro that includes actions to lock track controls or set layout to "big meter" instead of the folder button. I guess it doesn't help if they are scrolled out of view.
3.) The action SWS: Toolbar arm toggle has a specific function, but one of it's side effects is it is always lit up whenever any track is armed for recording.
It seems like I remember people talking about some kind of prerecording warning on the forum here, but maybe that was an older thing? Or just a request. Or maybe it's in there and I don't know about it
There is a prompt screen available where you can save or delete files when you are done recording.