I don't think it's too much time. Honestly, I think that players should remember that they all have a 4.5-second cast full restore on their bars at all times that never goes away. It's a long cast so you need to slip away where you won't get hit for that long, but it can really be a game changer, even if you're at full HP but just need more MP for Recuperate, it can be a godsend.