if you get your squadron going you will be able to run some dungeons as whatever role you choose with AI for the other roles. That might be a good way to get back in the groove. With the MSQ being as long as it is, you might be disinclined to redo the whole thing. You could just progress with whatever you are most comfortable with until you get your squad up to dungeoning level. PotD is good but roles aren't super defined with randos just running through it like headless chickens.