I really like editing with the slide option (holding STRG and ALT). Even better would be a scenario where one does not need to cut the audio selection beforehand, and crossfade afterwards.
The ideal scenario would look something like this: One would make a selection for the audio part and hold the modifiers (STRG and ALT, or something different), and slide the audio to the place where it is appropriate.
So Studio One would essentially execute the procedure while containing the original event (no visible cuts or crossfades), similar to the merge to audio parts command.
So the edits would be only visible in the dedicated audio editor and not in the arranger.