Title says it all, I am considering rolling a warden, but no ToA and no Shield spec kind of scares me from doing so. Is there any demand for Wardens in end game PvE? 8-Man RvR? Zerg RvR?
Warden are fantastic complementary healers. Competitive groups are running them in their setups as a sort-of third druid. It's very strong. Get 10 blade for the side snare, 42 regrowth for the best spec heal and you can still grab an entire set of red resist buffs. If people don't want you because you're a warden it's a group you most likely wouldn't want to join anyway.
People are busy killing each other. There is no need for concern. You can check out the herald and look at some warden stats. In fact, the currently highest RR player on the server is a heal warden.