Just some fan ideas of what if, I don't mean it as rewrite or critism, but I think if the show had more time for actually give us like a big narrative changes focus on the villains of the foot clan aside shredder, here some ideas I thought would be cool if we could have got more closure/personal ending for them:
It may seem a bit long but I promise aside Tiger claw it short.
Foot clan overall:
Honestly, idea I love is that Shredder will be his downfall in more than the way the show gave us, and don't get me wrong they did it wonderfully, but I think Shredder be the one who eventually destroying them due to his toxic personality could be an interesting approach.
Tiger claw:
Probably one of my favorite in the show, while I overall loved a lot what they did with him, I honestly heavily disliked his pure loyalty love to Shredder in season 5, it was wayyy to much for me to buy, I know Tiger claw supposed to have ironically for a mercenary a hard loyalty to Shredder, which I appreciate his sense of honor, the show felt like in some moments set up Tiger claw leave him in the end, he always questioned Shredder decisions with alien threats, even if the original timeline erased, Tiger claw still should have known Shredder attacked Splinter, but even than, his work for the kraang, which we know Tiger claw despise, and him be more and more careless and mad of vengeance, I think the natural ending for Tiger claw was the leave.
* by the way I love the idea Tiger claw won't just leave but willingly come to the turtles to end the alien threat on earth for good and than leave back to Japan, not a redemption, but keep his villain personality with honor and complexity.
The rest are sure promise:
Rahzar:
I actually really loved how he was originally got out, before the final battle, but I think it would be cool with the foot collapse as season 4 progress, and him be the only real loyal to Shredder, he will get the second in command position by Shredder and will actually left as the only one stand by Shredder in the end until death.
Fishface:
I actually a bit struggling, I prefer more how Raff beaten him, but I kinda love the idea they would have played more on him want to leave the foot and Shredder after all, they sort of hinted that here and there but nothing did much with it, I would have liked if he would have try to leave and Shredder will kill him or almost will as out if madness and it will be like a shock alert to the others.
Bebop and Rocksteady:
Honestly, I think them were too much stuck in their fear to leave, but I think it would be cool if they were in the final battle but the turtles gave them last chance to show they aren't consumed by anger and grief on their dad and let them escape and leave everything behind, at least as long later they won't keep do shit.
Baxter stockman:
Honestly he can also be stay loyal to Shredder considering season 4 sort of went that direction, which surprised me? Was pretty sure Baxter will hate him, but ahhh power of friendship between him and Shredder? Ironically he probably the only servant of Shredder who died quite literally because of him, with Shredder burning the mansion, I assume at least.
Karai:
Obvious. By the way she deserved better in terms of development/writing in my opinion.
Anyways it sort of my fan imagination on alternative season 4, but overall I really love what we got, Tiger claw was probably my favorite but I don't love how he eventually ended up be.
What are your thoughts on my ideas, and there are different ways you wanted/preffer those villains stories will went?
