Honestly, the jump potions and MSQ jump have bigger functional issues than being the assumed cause of player skill dips. I did experiment with trying it out on a new character over on Couerl to see what kind of benefits the service would provide to someone who is starting out in the game, and I think they didn't quite hit all the right spots with the system. If someone uses the level jump they should get all the optional services unlocked as a part of it, such as the ability to glamour, dye armor, and have access to the aesthetician. I was honestly surprised that even the MSQ jump didn't include these features.