We have talked about piano roll for decades. ~19 years ago there was a developer onboard trying to make a piano roll for Renoise but it never materialized, I participated in that thread and was a proponent but I think at some point we need to stop talking about it and send Piano roll users to other DAWs and focus on what makes this awesome tracker even greater.
Why would piano roll users actually want to use Renoise even if we had a great implementation? For me the editor is where you’ll be at most of the time so it makes very little sense to use Renoise if you mainly use the piano roll view in my opinion, it’s just some luxury for those of us who wanna nudge notes around a little bit.