Yeah, he was one of the last heroes to get added. The devs knew the writing was on the wall so they focused on adding fan-favourites before the game went into ‘maintenance mode’ and wouldn’t get new content, so we have Deathwing and Hogger (and they’re both great)
Also yeah there’s no level cap on heroes anymore, I have Brightwing over level 200, she’s absolutely great
Ironically I found the game had the opposite balance issues before going Maintenance Mode- too much focus on high level competitive play which was getting super ultra hard stomped by Genji and Tracer plus a support. The day our competitive leagues were officially canned, then we got what I vividly recall was the best balance patch ever that made QM and draft league games so much more open-ended and fun to play.