The best (everyone surely have different favourite) pattern editing which I´ve noticed, is on "Psycle Tracker", just with few adjust. I recommend to test it, i would love to get those on OpenMPT. Time to time I test MPT and like to change tracker, but pattern editing and changing shortkeys etc to more close Psycle and FT2 style keys takes time..
Like MPT´s midi export
I make drumtracks with EZdrummer on tracker as VST.
On Psycle I just love, its easy to change edit step, is it on (or off) on volume/effect column,
pattern goes back to start when goes end,
playing / stopping with CTRL-key
edit on / off SPACE-key
delete note with DEL-key, and it step same "edit step"
It just so handy and quick, just if making example basic drum beat,
step on 2´s hihats, notekey on hold
step on 8´s , then just hold bass drum and then snare
And then volumes on effect column, example hihats have step on 4´s louder and quiet
I dont´know did anyone get, what I´m talking
But, It´just so quick which I dont get on OMPT´s default key settings, and even when have try to change them..
Overall that workflow is better as default than MPT, but I try adjust, hopefully I make it.