Hi
I am a new support main and I want to try and remap some of my buttons from all the supports
Change jump to left stick to make it easier to wallride in combat. Now I have it mapped to all my characters
I have been an idiot. I should probably go elsewhere now.
I’m glad you took my advise man 
Good luck with the professional reconversion.
My tips for you:
For Mercy (and Torb); I have inverted Circle and the right cross pad. This allows me to whip the gun (hammer) quickly.
For Moira: Invert R2 and L2 (do it ASAP). it’s illogical vs the image on screen if you don’t.
Lucio: this is a bit more advanced but you could invert L1 and X allowing to wallride with L1 and keep aiming at people (if you’ve played Titanfall before you’ll understand).
Optional: If you are used to jumping Lucio with L1. You can also invert L2 and X for Mercy. This allows you to do the Angelic descend whilst still aiming.
Title. It says in title