Mouse over actions should really be officially supported.

[TaleraRistain]

I've been F-Key healing for about 18 years. So, there is one person you've now met.

Fkeys, focus, and assist are pretty essential skills in my eyes.

Two! I've been using function keys for party targeting since my EQ days. And it was so weird not having an actual "Assist" key here. I had to make a macro, lol.

It's a bad idea to use F5-F8 at all during combat if you only have one hand on the keyboard because they are so far away from that one hand's resting position. It's still a little bit of a reach to use F1-F4 but at least for most people that's doable while still keeping two or three fingers on their resting keys. The difficulty of accurately pressing a button increases significantly the farther you need to move your hand to press it (See: Fitts's Law), and this difficulty increases even more when you only have a fraction of a second to press it.

It may take some getting used to but it's something you can learn with muscle memory just like any other controls. I don't ever have to look at function keys to find the right one for the party member because it's automatic for me now.