So IT4 is likely better, but Irving SHOULD be better? Or could be, if he revved up his defensive game?
After reading through and thinking about it, this might be something a consensus might form around.
If it's fairly accurate, trading for KI would be a bet his defense will step up and perhaps some other tweaks and improvements to his game as he enters his prime (yeah, not there yet) - and that he would improve defensively in ways IT just can't. It's one of those tough strategic calls that could be a "good to great" sort of thing.
All of that notwithstanding, The deal breaker for me is helping a rival. I'd only get involved to A) get inside info on possible player movements, and B) if it were to further Cleveland's downfall.