Sprint can not use TP

[winsock]

snip

As I said, you'll want to review the thread.
IMO the biggest issue is because casters need to have better mobility cooldowns than melee to be competitive with melee. Not landing a GCD can cause terrible issues, which is why ACC was historically the most important secondary stat up to the cap. Gatherers dont matter very much because they can mount and mount speeds have increased. Other caster we're given additional mobility to compensate. Ex: rdm dual cast, whm CD reduction to skills like assize and benediction + the addition of DB and PI, BLM can triple cast and teleport back to LL, etc.