What are the largest issues plaguing XIV currently?

[Shurrikhan]

Gutting TP instead of just reducing TP cost of weaponskills by a lot. It made tanks and physical DPS gameplay feel even more shallow and this isn't even taking into account how tanks got butchered this expansion. TP acted like stamina in other games and was a resource that you had to mange and choose your moves wisely. It also acted as a level of depth to further add involvement and a little thing that this game has been slowly losing over time, consequence. The only real issue that people complained about was that sprint was tied to TP which they had since ARR to fix before 5.0. We tried no TP and its terrible so lets bring it back in 6.0? or lets remove MP because half the jobs don't use it and I hate having none when I die and get raise'd in battle be cuz it's soo difficult to mange MP that its ruining my fun of just spamming holy nonstop.

I will agree that it's a little stupid to have MP but not TP.

Either keep them both or toss them both.

Better yet, use them both, and more integrally than just "click this every 60 seconds, or assign an auto-clicker to do that for you", or lose them both. Neither Invigorate nor Lucid Dreaming add anything to the experience, especially now that Lucid Dreaming doesn't even Enmity-fade.

That said, all that was necessary to fix TP was to have resource ticks occur per GCD instead of per 3 seconds (at 20% less base strength to compensate), so they could thereby scale with Attack Speed (and therein Skill Speed). It'd still be a trash mechanic so long as there's never any real advantage in higher spending (e.g. no sufficient reason to weave Enpi, Rockbreaker, Sonic Thrust, etc, situationally into a single-target raid fight), but that's really all it'd have taken.

[DPZ2]

Neither Invigorate nor Lucid Dreaming add anything to the experience, especially now that Lucid Dreaming doesn't even Enmity-fade.

Lucid Dreaming is a nice way to restore MP during those times your healer has been going full-damage-mode during a personal duty.

[Shurrikhan]

Lucid Dreaming is a nice way to restore MP during those times your healer has been going full-damage-mode during a personal duty.

Except, again, what's its actual gameplay? An auto-clicker does the job just as well as an "optimized" use of the skill. It could just... not exist, with an additional 350 "Refresh potency" generated per minute instead, and there would be no difference. It's just bloat.

It doesn't have to be bloat. Equilibrium worked perfectly fine in giving both TP or HP when needed. For example: if PLD's Clemency gave TP in Sword Oath stance and HP in Shield Oath stance you have one button that performs different functions and also gave you the player a 'choice' in what to do when in a situation. Choice, is also something that this game is slowly losing in favor of balance.

Forgoing nitpicks into those particular examples... Agreed. MP, TP and their relevant abilities don't have to be just bloat. And I'd rather use both TP and MP than merely scrap those mechanics. But using them required that those mechanics amount to more than just a button you (auto)click every minute.