I'm doing amazing in the Leo PTA right now and loving it. Tons of huge games, tank almost feels OP. I haven't shot a single premium round since getting the top gun.
Just finished the grind to the Leo 1, could purchase it right now and move over crew…. but I feel nervous. I remember finishing other tier X grinds in the past and being super excited, only to realize the tier x tank was a huge letdown- typically a slight improvement over the tier 9, with a huge increase in difficulty level due to MM. I can't even count the number of times this has happened since I unlocked the IS-4.
The Leo seems especially likely to be subjected to this. Right now the PTA sees max 3-4 tier ten tanks per match. With the Leo 1, it's 15 tier 10 enemies in most matches.
To be honest, I kind of feel this is a major flaw of the game- you grind up to tier X, quickly remember why hate playing tier X and then go grind something else.