I shall give my thouhts. Bought Gambit yesterday and pushed him to level 50.
Early levels I feel he was very weak, compare to some other heroes. But, then again in normal anyone can faceroll. Once you hit Heroic, things starts to hurt....alot.. I have prestiged Loki, level 60 Human Torch and level 60 Spiderman. Many other heroes at level 50+. Gambit dies by far easier then any other.
In Heroic, I died 3 times to Lady Hydra. Her bullets was just so annoying, granted I was lazy with dodge.
HOWEVER! When Gambit is in overcharge mode, he becomes a killing monster! Royal Flush with overcharge will kill an entire screen in pve and pvp. There is one catch... he needs gear... Without gear he is just trash, with gear he becomes good.
Main issues: Survivability and those 30sec or something that you are not in overcharge. Without overcharge he is just trash. 0 damage 0 survivability.
When leveling up I also changed from a hybrid to pure range. Dead mans, was just to good when in overcharge. The squishyness just overwhelmed facetanking stuff.
He is fun, he is capable. But more of a challenge then many other. Specially if you look at reworked heroes. Which I see as the main problem. Gambit is considered a reworked hero because he is new. He have the signature skill and ultimate at 52.
People that say that he scales well with levels. Well at 32 you can have more overcharge time, because lets face it.. Without the overcharge we are just trash.
But he is fun, I will hit 60 today after work and do some t4 reds and pvp. For testing purpose. I never had any real spirit issue at any levels. Im using full artifacts that helps with damage and ofcource the "Donut" that gives health when using energy attacks.
1 word.... Gear....
I think he will get some touchup, I actually hope its on the survive part. Im okey with having low damage then overcharge MONSTER gameplay, its kinda dynamic. But he is the ONLY hero I had to BUY medkit the only hero to ever die to Fisk. (Yes, I played Hawkeye.)
Some small changes to some core skills, maybe some more reliable CC. Something that gives us hitpoints, somehow..
Just my 2 (1000) cents.