Games out of development, nothing is going to change going forward. Its like asking for changes to blackthorne or RnR racer.
Theres a huge community list of bugs in coop… huge. It was passed to blizzard and the person replied that they would pass it on internally but he didnt really think anything will be done.
Theres also some server connection probs that are getting more frequent, but because they can be fixed with a close and reopen, thats the official workaround… as in, they’re not getting fixed.
If they arent willing to fix issues, they for sure arent going to put anything new in.