I find the sliders can be tasked to anything I’d use the editor app for, live (keyboard part levels, tone or effect controls) and I keep my Performance List in alphabetical order, so it’s quick to select next songs with the scroll wheel while I play.
One thing the lack of buttons compared to the G70 did for me is simply to set things up in advance… if I need to make more than a one button change while I play a song, I make extra Performances (song solo, chorus etc.) and place them adjacent in the List. With 999 to play with (compared to the G70’s 128 per setup) it isn’t really a problem even with a song list of several hundred songs all loaded.
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An arranger is just a tool. What matters is what you build with it..!