Personality: It's an interesting card, and it could have been useful in the TRR era, for you had Dark cards. Unfortunately, with the Light cards unused, you have a 50/50 chance of helping the opponent than 1 in 3. Now, not as such. Still, it would have been in 04, 05, and not sure on 06. 5/10.
Maintenance: Do it if you need a deck shuffle, which does happen. Or to evade losing a card with opponent hand discard attacks with a bonus shuffling. Somewhat win-win. Heh.
6/10.