IMO, the loop function is too complicated for what it does. I think you should use vertical/position markers for other things... as for looping, just select the measures you want to loop and press the loop button.
A vertical position marker (like a timeline marker) could be helpful. The "click the note head to select where you want to begin playback" is painful and when you stop playback, there's no option to playback again from the same spot. I find myself pressing many keys to get back to the invisible position marker (the notehead in this case) while using just one key should be enough.
I just discovered the continuous view thing, VERY HELPFUL but... any plans to make a proper way of navigating through time like in sibelius 7.5 or guitar pro?
Musescore doesn't have timeline markers, does it? It would be very helpful to be able to assign shortcuts to markers... having to press CTRL+F and insert (and remember!) the measure I want to go to isn't very practical.
If any of this is already implemented, let me know!