Go defense/offense or utility/offense neutral outlander.
Take your defense form or the right utility form and use feral rage against undead, which you'll get an xp bonus for killing because you're an outlander. It would be slow, but you could solo rank like that. I've done it.
Later on you can get kills with your offense form. If you get lucky with your defense or utility form it may help. For example, jaguar/cheetah would be an awesome combo for an outlander.
I dunno. I kinda agree with you, there's so little going on during my play times I can't see how there's any fun to be had.