So, I’ve been playing for quite a bit. My level at the moment is 44, alongside VIP 4 
I wanted to share some thoughts on those champs I currently own:
- Frozone - my only true Control character, he’s always been a great help. He deals decent damage and his CC is just marvelous… downside is, he’s very squishy, and the upkeep cost of his skills is incredibly high - two of the skills must be maxed.
- Finnick - sure, you can call him a Control hero… if he’s of Purple rank. Mine needs just few more levels to reach that milestone. But for now, he’s a good Damage dealer - he has decent HP, both Normal and Fantastic attacks, a bit of an AoE. You might call him a jack of all trades.
- Violet - I think she’ll be of any use when she’s Purple. Her shield comes into action when it’s usually too late, plus it’s not really that strong. And she’s locked out of using it after doing a shield roll, I mean, why would you do that to her??
- Yax - bread and butter of this game, the only true Healer. Because of it, he is a must have. He has low hp, but can deal good damage with his skills.
- Judy - useless. She has a good buff, but terrible heal and CC. Her stats are also pretty bad… although I must admit, she has an insane hp regen. If she makes it through a wave, that is.
- Vanellope - a pure Fantastic damage dealer, she’s quite a nuisance to deal with. She slows your front line, just to start attacking your back line. Also, invulnerability when using her ult? Heck yeah. Can’t wait to Purple her, with AoE on all her attacks she might truly be a beast.
- Elastigirl - queen of single target damage. Not only that, she also has CC in her kit to bother the tank even more. Really, if her ult crits that’s a dead, well, pretty much anyone that’s not a tank.
- Dash - I started appreciating this guy only recently. He deals very good damage and is pretty sturdy, but still is usually the first one to die. His problem is - when he jumps in to attack, he is there literally. So he suddenly stands in front and can get a beating. He is also a bit luck based, if it’s your day he will jump to someone in the back and just erase them.
- Nick - my first two star. He’s also pretty popular, mainly because he’s very good in City Watch. And he’ll be even better at Purple rank. Also, he’s a hard counter to some heroes because of his 7 seconds charm. Besides that, he deals very good damage, and his AoE skill just shreds when only one enemy remains.
- Jack Sparrow - my personal favorite. Extremely tanky, shines when his Blue skill comes into action - the damage he then deals is just ridiculous, because he has a boost not only to his basic attacks, but because of the scaling to also his ultimate and riposte. Also, there’s an animation cancel exploit, where you skip his salute animation by using ult immediately after seeing he has a green arrow above his head.
- Jack-Jack - because he’s a part of guild rewards, it’s very easy to gain chips for him. But tbh, I don’t like him. His hp is probably the lowest in the game. The only thing about him that I can appreciate, is his skill that attacks the weakest enemy… but other than that, his damage feels underwhelming.
- Felix - my man to go in most scenarios. He ironically isn’t all that tanky, but makes up for it with his utility. He has a very frequent ult which basically interrupts whole enemy team, a good regular single target heal, and very good CC which is 4 seconds blind. Also, he’s pretty unique in that he can’t do damage except for his ult, his basic attacks just repeteadly heal himself. Sadly, he has extreme upkeep cost because of two skills that must be maxed.
- Mr Incredible - a very aggressive tank, he always takes a lot of damage, but also can deal a ton. He actually doesn’t punch all that hard, it’s the fact that he usually punches your back line with incredible speed because of his self buff. He has very good health pool, but low armor and is vulnerable to Fantastic damage.
- Ralph - for your first tank, he isn’t all that bad. He has good armor and reality stats, good health, but very low damage. He also has all three skills that do CC, meaning he probably has the highest gold upkeep cost in the game. Because of that, I’m not currently investing in him.
That’s it for now. I just thought I’d share some thoughts since feedback is important 
Also, I’d love to hear opinion of others