In the description of the rating for Sorcerer you might want to mention the amazing utility of exchanging unused pact magic slots for sorcery points (or sorcerer spell slots via points if you're full). Sure, it all resets on a long rest, but if you get an unexpected short rest you can roll over your unexpended power. Similarly, whenever there is short-term downtime (e.g. waiting for another character to go shopping, waiting for nightfall, waiting for a guard rotation, etc.) you can hoard the otherwise-wasted pact magic slots you get from taking a few short rests in a row.