I find the Percussive mode very useful for many things. It looks like a normal wave-form but with the big difference that this one you can actually edit musically. All notes are centered on line 0 but you can still re-pitch blobs up/down and that's a huge difference from a normal audio-wave. Someone asked for chord-blobs in the forum, well here is where you find them: if you play a chord it's a blob = a chord-blob which you then can copy, move, (or even paste on top of another blob (double-sampling) pitch, slide and so on. It's also a good place to look at the volumes, to see what blobs that needs adjustment to get the recordings best possible and it's very easy to do here with a clear single wave-form overview. If I want to time-stretch, I can select all, grab the 'z of the rightmost blob and stretch. If artefacts are introduced, most often, moving the closest note-separation back a bit will take care of it.
Using the Select All Following-option and then dragging blobs a bit to the right and squeeze something in and drag it back again, all stuff like that are easily done here on a simple line with wave-form overview. 'Parking' a sequence a semi-tone up and then mute it is also good for temporary storing and it's easy to find again. Another good thing with this particular mode is that it is very efficient in smaller windows. The current limit for smallest window could be abandoned and instead make this window able to take on the thinner shape of a track-lane so you could easily have a number of M-tracks on screen. A fictional toggle Tool-bar on/off and use of the context-menu instead would make a smooth DAW interface. It's also a piece of cake to instantly zoom in very big on blobs-on-a-line. The background color could of course be made custom to go better with my DAW instead of the less inspiring paper-white.
However - (and here we go again)
Some otherwise available edit-functions are temporarily deactivated while in this mode since it's perceived as a percussive-mode and is not meant to be seen as some Magical Golden Wave-form. Transitions is one such important function, necessary when cutting a blob and re-pitching parts of it. Note-values and frequency-Hz are other disabled functions needed to check the actual tuning. The possibility to keep all the edits when switching between views is a must-have, enabling work in the most comfortable view of ones choice. I could go through the list of Melodyne functions here but you get the bottom-line: Make all tonal functions work on Melodyne wave-forms and forget about the DAW wave-form.
A note: Generally removing artificial limitations will make the software twice as useful. Other examples besides window-limits could be: let transition-lines run over whole blobs to make seamless note-slides or formant-envelopes.