I haven't yet found any disadvantages to draining the fuel tanks from rear to front. They're in this order: rear-aux (18), rear-main (22), front-aux (58), front-main (33).
I haven't bothered trying this Moot but it's an interesting idea; however, which order depends on what you're trying to accomplish. Draining aft first will move the CG forward and make the airplane more stable which, with the 262, probably isn't the best thing as it's not the most agile fighter around anyway. The plus side to this is that it may make recovery from a departure easier. Draining the forward tank first would move the CG aft, perhaps too far aft I'm not sure, I'd have to test it. Moving the CG aft generally improves pitch authority and give a slight increase in agility. It might be interesting to play with this.
