here's a few spots: https://imgur.com/a/kd7cS5n
i would say these all look like you're floating in the air, but a lot of them are debatable because you're still close to a wall. however, i think up top on gully 2nd where you literally can float in the ceiling (this is not a wallbug fyi), and the one on sunshine last where you legit look like you're floating are perfect examples. i dont get how someone can be okay with these spots and not wallbugs.
i think the rest of what you said is pretty fair, although i dont think it matters what order you clear stickies/wallbuggers; if you know he's there, you can just clear stickies and if he falls down on you, you can back up back through the choke and one/two shot him with little effort. https://emojipedia-us.s3.dualstack.us-west-1.amazonaws.com/thumbs/120/whatsapp/116/thumbs-up-sign_1f44d.png
barring the dumb arguments about "map glitching" and "map maker intention", it honestly just boils down to opinion on whether you think its broken enough to be worth banning, which i really do not. i also think roamer is a bit of an underpowered role and giving him a slightly bigger toolset would only improve the metagame and make it more balanced.
Well, I can definitely see the hypocrisy of wanting wallbugs being banned and not those spots but tbh I think those particular hiding spots are just as bad personally. All in all, fair enough-- I don't have much else to add to the discussion beyond what I've said already.