Picking over the rules looking for abuses isn't being creative.
WHAAAAAAT?!?
You, sir, have maligned powergamers everywhere, as well as their art.
GET 'IM, boys!!!
I gave the ranger in my game a homemade bow of web (think wand of web, but works through the arrows it fires). The ranger also has the sharpshooter feat. I have had to make all dragons in my game the spellcaster variant with the Featherfall spell.
I have no problem with this. For most flying monsters, it's fine if the party scores an easy kill now and then. For dragons and the like, that's what Legendary Resistance was invented for. If you've removed LR from your dragon, well, then, it's going to get pwned by any caster with a save-or-lose effect; falling is the least of its problems.