I know this is a joke, but it might actually be interesting to have a Classic PvP realm of some kind where all players are confined to the original two continents with no mounts.
It’d make for some interesting dynamics since inciters in PvP don’t have a means of escape that lasts indefinitely. Swiftness pots would be worth a lot more than they are on normal realms, people would probably keep around +movementspeed sets for travel, and warlocks could probably run lucrative taxi services covering the gaps in mage portals. If nothing else it’d be a fun experiment.
No I’d let Blizzard assume whatever the hell they want to assume and make a dozen or more no fly realms and be proven so disproportionately wrong they feel embarrassed for even trying. Make them remember their failures from WoD so they can never try doing some garbage like that again without engaging in player feedback.
Blizzard (Ion) are hell bent on making this game how they (he) wants that they need to do something like this to be proven so wrong they just leave it alone and stop trying to bring in these stupid ideas of theirs.