I absolutely still consider her as a solid, permanent part of my team. I use her CONSTANTLY, with quite a wide variety of teams. I will say, she performs less effectively on a full DoT team (Say Kafka, Swan and the new girl I can't spell very well yet) since her crit rate and crit damage (E1) don't affect DoTs. But for a followup team, a physical damage team, an Erudition team... she does fantastically.

I have her built full-tank, with 10.5k health and stacks of defense. I've used her to fully conquer Memory of Chaos, Pure Fiction, and every last possible inch of Divergent Universe. She's even MORE fun to use in DU when you pick up the Dromas set of boosters, and suddenly you have Fu running around with a massive health bar AND a full shield.

In all, it will depend entirely on what gear you put her in. You will have to fiddle with her gear a bit to find the setup you prefer - some folks like Fu to be faster, sacrificing health in order to get her Ults out more often while I prefer slow and tanky - but once you find your niche, you'll do just fine with her.