I edited the copying and pasting a lot from Ableton, because I think that's where ableton really shines with its grid, so I made my F1 to F7 keys switch between grid sizes and then also if I drag in the bottom of a media item I marquee select items and create time selection if it snaps to grid, if I left click/shift click on items it selects them, puts playhead in front of them and makes a time selection that is loop able afterwards. Same with R doing a reverse.
So I can edit and work fast like I like it with ableton, but I get a full featured mixer, (imo) better midi editor that I can also customize and is less cumbersome to work with (actually I like it the most from all daws I've tried so far) and overall the reaper's no bullshit interface just really works with me
Also may I say that as simple as it sounds, when doing music for the whole day and finishing multiple tracks daily, simple tasks like quickly navigating track vst's is like one of the biggest deals for me, because my mouse arm actually genuinely hurt from ableton and overall the whole interface. Say I am on a track and I wanna change a vst parameter on a different track in the arrangement view, I have to find the track with my mouse, go down to the vst's toolbar, click the little icon, do whatever I need and then get back working. This takes way too much energy and time for me to be efficient
If you would like to ask about something, please don't be shy to just pm me.