In my workflow, theres been a couple options I wish I could use.
-A"Swap Nozzles" option, so you don't need to go and tweak a bunch of individual features if the solids were selected wrong
-A Taper option or something similar for the Priming Tower. - It usually doesn't take much to prime the nozzle, but I've had to make larger priming towers simply because they will tip over if they get too tall. If there was a way to taper the priming tower so it had a larger base, this would be less of a problem.