Well if the costume really did weigh 20kg like he said then I can see that it really would have had an effect on his performance. That said though, it's his own fault and he should not be complaining about it.
I can't imagine that it would have had such an effect on his performance, considering Fury dominated him from the first second of round 1.
As far as I'm aware Fury said he still has three fights on his contract with ESPN, that's after the recent Wilder fight. So that means we will probably get another Wilder rematch, then Anthony Joshua, and then hopefully Dillian Whyte. There's absolutely no point him fighting Chisora who has already been beaten by both Whyte and Fury, so I don't want to see an old Chisora get sparked out once again.
I think the last fight should be with somebody who really deserves the title shot at the time. Maybe Usyk, Kownacki or maybe even Daniel Dubois.
Although, I'd agree that there are better fights for the fans than Chisora. Fury, and Chisora are personal friends, and Fury has always hinted giving him another fight whether that was sarcastic was hard to be determined considering the context that it was said. I'm not sure about you, but having a trilogy almost 3 fights in a row just takes everything out of the last two fights. Usually, trilogy fights are over a period of time, but we'll be having 3 fights within 4 fights for each fighter which in my opinion is too soon. Personally, I believe the better option would be to have a break, and allow Fury vs Joshua. Then whoever wins that can vs Wilder again. I'll be routing for Fury, but lets just say that Joshua wins it. It would still be worthwhile for Wilder to fight Fury after Joshua just because he still has something to prove.