You can tab between then (q? Not sure) and I know that you can swap with a keystroke source with destination, plus load entire timelines in the source.
What's missing?
I'll try to be a bit more descriptive, my apologies if it was vague.
Yes, in resolve you can load sequences into the source and splice them into the timeline, but what I am referring to is actually swapping the actual timeline between the source and the "record" side. I'm trying to really not compare Resolve to Avid, but it really drives down my point I said before.... Forgive me.
You have the option in MC to toggle the actual timeline between the source timeline and record timeline. The record timeline shows the playhead in blue, while the source timeline shows the play head in green.
I believe this is a strengthening request for Resolve as it allows for greater and more importantly pinpointed control over anything loaded into the source monitor instead of scrubbing through the tiny window of the source. Also it allows you to pick what tracks or portions you want from the source and splice that into the timeline.
It is extremely helpful when producers are let's say.. "Can you take this section of v2 and put it there in v3?"
You can load that sequence into the source, toggle the timeline over, mark the clip you want or even a full section of the source timeline and then splice it (The specific blocks or in to out) right onto your timeline on whatever tracks you wan them to land on.
I could make a gif of what I'm referring to.