The current transformation would be fine if you could gen ult during it. The reason people loved old bats was that you could keep fighting if done right. Now because it is just limited with a MASSIVE downtime enemies just run away and wait to kill you during your minute long downtime.
Old toggle elusive mist was very unique, still not sure why zos insists on getting rid of unique skills. Its like the original dev team thought of many different mechanical playstyles, but the current team only has one vision of certain mechanics. Like how dizzy was changed from a unique long cast time hard hit into a generic spammable.
We should use the insightful and awesome buttons more
It seems when they change something they a tendency to overdo it
Mist Form did not need to become a teleport like it is now, they could have simply changed the defensive skills to grant named buffs and kept it a toggle.
Mist Form - Immune to Snares and Immobilizations, gain Major Evasion and Major Protection.
Elusive Mist - Gain Major Expedition
Blood Mist - Deal damage every 2 seconds healing for 40% of the damage done
If that is too weak then have a passive for simply slotting it like Major Savagery and Major Prophecy