Well, you can probably make a mouseover-macro for the targeted heals. Or if you cant someone will probably make an addon for it :P
And yeah, the healthbars suck donkeyballs but it can be fixed with an addon (which shouldnt be needed, mind you!)
IMO the healing is somewhat similar to TERA, but there are more "ground targeted" telegraph heals. I think each healer has 2-3 normally targeted single-target heals as well.
In Espers case you have 2 targeted direct heals, one that gives you a healing buff after using it and one that does a direct heal and then summons an idol that heals everyone around it next to the targeted person for like 10 seconds. Other one can cast while moving and other one is stationary. And then theres 1 HoT spell with 2 charges that's instant and targeted. Rest is either AoE or telegraph-targeted.
Here's a cool little image about the heals: http://i.imgur.com/76KtROq.png
Probably a bit outdated but it should give you an idea.