The infinite loop.mechanic is the ONLY reason zfinn works. If it is somehow "fixed" to not allow the infinite loop, I'd want a zeta refund. That infinite loop if you can outspeed your opponent is what makes zFinn a Go-To offensive team in GA/TW, it's what makes him viable in P2 of HAAT for newer players trying to get a team that can put up decent numbers. It's a single zeta that's extremely valuable for new and growing players to be able to make serious growth in multiple areas of the game. It's never been a problem until now because of the RNG element to getting expose to stick.
3p0 and his mass assist, combined with rebels (many of whom attack multiple times) being able to expose is the issue. Even that isn't much of an issue IMO. It's the fact that traya topples and doesn't stack tenacity when toppled.
As far as "future content" issues, they can always make future raid bosses immune to expose and completely negate the issue, making any resistance teams (including JTR) useless for that raid. They've already done that with other status effects like daze and stun in raids. All it takes is forethought by the devs to plan around teams.
They just need more skilled players as their beta testers. I'm half convinced that those who design the games don't spend nearly as much time as the players do, reading forums, surfing reddit, discord, gamechanger vids, and theorycrafting. If they knew the game they've made as well as the players do, they'd have caught a bunch of issues before they became an issue.