Well, if folks want to argue constant movement in WvW against the use of the heal Well, then they might as well nix the idea of using any ground AOE that pulses, be they defensive or offensive. Just as with allies not going to stand in your white circles of love, you can very well bet that enemies aren't going to stand in your little red circles of pain, either.
I've been quite successful in WvW with all of my Wells. If folks understand when, where and how to use them, they are very powerful utilities for a Necro. I probably don't need to state the obvious, but if folks don't fully understand the mechanics and proper application of their skills, then of course they're going to find them useless.
Maybe its just me, but I don't have any kind of skill problems with any of my toons. I can easily figure out what works best for me and how to adapt any skills, weapons or utilities, to my style of play. Of course I have my favorites and best fits, but nothing I consider ill-designed and not worth using.
That's why I constantly preach that people have to experiment and find what works best for them, be it Traits, Utilities, Weapons, Armor, Runes, Sigils, Boons... if they can get those things figured out, then they'll become the best player that they can be.