Comping takes
To comp different takes, use Split items.
Select all items and right-click Comps > Save as new comp. You can save multiple comps too.
You can right-click Comps > Move active comps to top lane.
Show all takes in lanes when there’s room with cmd+l.
Consolidate comp with crop to active take (opt+shift+t).
There are lots of actions for comps too.
Right-click Take > Lock to active take to avoid accidentally switching takes.1
Fast custom action here: Quick-Swipe Comping Logic Pro Style (Rapid-Fire REAPER Tutorials Ep95)
Use action “Explode takes of items across tracks” to separate takes into their own tracks.2