Regen macro help, please

[Mikita]

I think the idea behind suggesting assist was not to include it to that macro of yours. The idea is that, since you can't put <t> and <tt> to same macro anyway, you only have the natural Regen somewhere in your crossbar. [snip] It's solution to the targeting issue with controller, not to the macro building in itself. It also gives you easy way to target the main tank for all purposes, not just one specific action.

I think I understand it now.
I did return the regular Regen onto my crossbar, and have the situational <tt> Regen on a different hotbar button that I would activate with my mouse when necessary. I hope I get to try it tonight. ^^

Why not just Focus target whoever is Main tanking? As OP says that macro has a pretty situational use and is simply remedied by Focus Target.

I usually Focus Target the boss since I like being able to see when certain big attacks are coming even if I'm targeting someone else for healing.

I was hoping there was a way to put it into a single macro, but it looks like that isn't possible with healing spells.