Samurai is a lot of fun! I play on PS4, and I know people hate it, but I macro. I found it super easy to macro the combos that I needed to use. I'm still working on the timing though.
I didn't think Red Mage was as exciting as I wanted it to be. It's a lot more mage than I anticipated I guess. I like to be mobile. And I know you can move with dualcast, but meh. I also found the balance systems to be kind of annoying.
Unfortunately, I'm not finished with Heavensward yet since I just picked the game back up last month. But I'm really excited to get to the Stormblood content :)