Enabling editing of dynamics with imported midi file scores

I've noticed that when you import a midi file and make a score out of it, you can't edit the dynamics of the notes by adding dynamic markings and accents. You can only modify the length with Loures and staccato markings.

Could there be an option on the midi import window that you check and uncheck to enable resetting the dynamics in a midi file and then being able to edit the dynamics the old fashioned way as if the notes had just been punched in manually with the note input?

This would be extremely useful for me because I have thousands of midi files that would be suitable or even easier to make into sheet music than manually inputting the notes. Some midi files I need to quantize into straight eighths when the swing was badly notated as dotted eighths and so I could fix triplets that were notated wrong and then import the corrected midi file back into MuseScore to go and add dynamics and stuff like that.