Request: Any video or written guides on Tanking/Healing END GAME using only Gamepad?

[Estellios]

If you use the Hold trigger mode, my advice is to split your most used actions evenly between the L and R triggers in a way that "makes sense" to you. I used to have all of my most used BRD and MNK skills on the R trigger which would end up with me holding that trigger 90% of the time for very very long periods of time and would strain my finger. I've since split the skills up and haven't had any problems since as I spend much less time on one trigger now.

Of course if you can play well with Toggle or Mixed more power to you and you can ignore this, but I can't stand them lol

Aside from that, if you use the R1 rotation for sets try to plan it so it is intuitive. My best example I can give you is that for WHM, Set 1 has Cure and Cure II in a specific place, where my Set 2 has Medica and Medica II in those spots, so basically when healing my brain goes "R1 for AOE".

People have already suggested having a bar with long cooldown skills that are on your 2nd+ set so you can see their recast times, and I also recommend it.