Edit
Found one. Will post more if I come across others.
Original
There are no specific Topic Posts asking for this. Rather it has come up in the pro or anti flying topics generally. Where people ask Blizzard to design the game with flying in mind to justify releasing flying earlier. Some say Nazjatar is a good example of this. Others prefer the Wrath model. This is something new but like everything in BFA this is likely a beta test of what is to come in the finished product of BFA which is Shadowlands.
Yes they have. I was able to find a few and posted them right above this comment.