clearstream
(He, Him)
Flying continues to be good in D&D Here you show brilliantly that a DM who allows flying PCs but hasn't shaped their world to acknowledge flight, is going to be caught flat-footed.Then have your allies pop out of a corner, throw stuff at them, and move back into safety. You just got a full free round of damage.
Their better off moving towards your allies then standing around waiting to be killed.
3 things that can screw it up.
A lucky enemy that guesses your location, hits with disadvantage, and disrupts your concentration that you have advantage on. A bit easier with a fireball.
Allies who rush in and stands toe to toe with the enemy. (Though rushing ranged enemies works fine).
True vision (flying avoids tremmorsense).
At which point, you switch to hit-and-run. Doing 2d8+3+2d6(+2d8 if they move). Which as about as much a regular rogue.
You can also fly 100' with a 120' range attack (though with only 14 Cha, eldrich blast is a bit weak, even with advantage ). So it may take a while, but you can kill any ground melee troops without them being able to attack back.
Or just fly 150' per round, and come back after a short rest.
As a DM I feel like in the core campaign world it makes sense for melee to carry a ranged weapon. Ordinary troops might have short bows or light crossbows, veterans might have longbows or heavy crossbows. Elites get to fly.
Interestingly, most flying creatures can't choose to not move...