What's the skill involved here?
I don't see any. It's all RNG.
RNG for your starter unit, RNG for ammount and type of items, RNG for some synergies, RNG for the carrousel, RNG for some epic units even being available in some matches.
Getting above 7th place is a miracle with 10 trillion RNG layers. Imagine a game of Snakes and Ladders where one player has a board full of ladders and the other 7 have it full of snakes. That is TFT.
Can we have ANYTHING guaranteed? Just 1 unit of choice, 1 item of choice, whatever.
Even getting the round 4 mission needs you to invest like 50 hours in being lucky enough to survive to that point.
Just remove RNG. There's ZERO control over anything. It's even worse than the worst gacha models. At least those have pity timers. You can be speding 100 gold on rolls for A SINGLE, ONE STAR epic and walk out empty handed.