My obvious complaints: slows down a little after episode 9 though it's really the calm before the final storm, complete waste of an episode 10, the change of Daredevil's character happens a little too abruptly there at the end, Bullseye turns a bit caricature-ish, Vanessa comes in too late to be the critical piece, and the last episode didn't have as good a pay off of a fight but they pretty much blew their load with the rest of the season so it's forgivable. Also, everything ended "too happy" minus Nadeem getting shot in the head. They really should have taken out Karen, even though contrary to folks here I thought she was very acceptable this season other than the background episode. We could really give a shit about how her brother died.
I honestly thought (was hoping) the suit Bullseye was wearing was going to tie back into Elektra somehow. He was pulled from the rubble at the beginning, but there was no Elektra...
Bullseye becoming some enhanced character as the lead-in to season 4 was as cheese as the ending of Iron Fist. OK, maybe not that bad. But it did feel like a show ending conclusion overall.