I'm not expecting high art from an NBC serial, I just want to feel like I'm okay with losing the hour it took to watch. So far I'm okay with The Endgame. A Russian crime boss who seems to be looking for revenge but might be working for a higher cause, leading a straight-arrow cop down a path of discovery. Corruption uncovered, vendettas fulfilled. It certainly does remind me of early Blacklist, with a little early Revenge thrown in.
I only hope they don't make the mistakes those two shows made, such as constantly stretching out the mystery until it's no longer interesting, or throwing in nonsensical twists just to keep things going. Let the story progress, let it grow and go where it needs - even if it leads to an end. They have good leads and a lot of potential. Fingers crossed.