Hate to say this but I have no idea what some of the people are trying to bring forward.
I don't really see how "Focus Target" is really so hard. Drag the Focus Target UI to the middle of the screen or on level, or which ever you are comfortable with. Personally my Focus Target and Target bar, including my whole weaponskill bars are all centered/eye-leveled in a way or another to keep tract of casts and buffs/debuffs/procs.
If you can't really handle all these simple things then Coil isn't something for you. I'm not even trying to be elitist here for it is a fact that there are always people who are extremely slow at learning.
However all of us here have to realize that this is NOT your KOEI Dynasty Warriors type of game where you can have the option of starting the game in Easy Mode and simple hack through 1 star to 5 star rating battles even though you are the slowest learner or worst gamer around. Don't get me wrong, I've played every installment of DW and it's pretty fun to me. But no, FFXIV isn't your DW. You don't have an Easy Mode to cheese down the supposedly 5 star rating battle to something that looks like 2 star on "Normal Mode". Right here, Extreme mode means something and Coil means business. If you can't handle it then it isn't for you. If you don't find it fun, you should really look for other games that fits your bill. No point wasting your time trying to change a base design philosophy set for this game nor your money on this game. You are certainly better off with another game that makes you happy (why do you want to pay for a game and make yourself angry?).
There is nothing such as enable easy mode but having the same rewards. Even for a game like Dynasty Warriors the best tier weapon drops from Chaos Mode. If you selected Easy Mode it drops shit weapons. There was a suggestion around for an easy mode coil with no loot rewards or maybe just Allagan Tomestones which by all means I would welcome it if SE decides to do it. Probably for the sake everyone able to follow the story and lore which to me is a good thing that SE should probably consider. The only bad thing about now is that casuals who can't clear coil are gated behind the story and lore (although they can watch from youtube but that's totally not the point, the feeling is different when you experience it in-game) which I think an easy mode coil with no top tier loots should alleviate this.
But if you are the kind of person who wants the best thing but without working hard for it then FFXIV isn't the place. I'm not even sure if there exist a game that has an easy mode but gives the best items.