There’s an earlier thread on this topic, under Car needed?
I agree with your idea, but would also like to see ‘car not needed’ or ‘walkable neighbourhood’ (although ability to walk varies for everyone, I realize). It would make it so much easier to screen listings for suitability. I’m not going to try and convince a ‘car needed’ person that it may not be the case. I just skip over those listings now, even though I may miss out on what could have been a match.