It's been a bad situation all around. I don't blame Koby for the Kyrie to Boston trade. Acting GM is alot different from actually having the job, especially when you have Dan Gilbert as your owner.
I blame Lue more for the current situation than Koby. We are seeing Wade and Rose play well in the playoffs. We saw Larry Drew run this team better than Lue has since the championship. We saw zero system adjustments to compensate to the different roster. Koby had to piece together what he thought were pieces that could plug into Lue's system at the deadline.