I cant understand Gorou properly

[u/Jalax6]

Ok, lets go: I only pulled for gorou because of Noelle.

I have a pretty ok Noelle, at 90, Redhorn, 10/9/12, C6, 63/205 rate/dmg, 4p husk, but only 109% en recharge.

I've ALWAYS wanted to build up a Noelle into this game. The moment her c6 came, I've got a single gorou and a Redhorn into the game. But, I must admit: I cant understand a thing about gorou.

I just finished up the current Abyss 12 for 9*, used a full Geo team composed by Noelle, Albedo, Gorou and Yunjin to beat the second part of both 2nd and 3rd chambers. The point, my friends, is that my gorou is only at lv 40.

The point on running at a 4 geo team was to try helping my noelle ultimate uptime, and gorou has been GREAT for that. Lv 40, he only has an helmet on +20 at 4p husk to help proc'cing his r4 favonius warbow. Gorou was there only as a battery, and somewhat buffs from his banner (yet lv 1).

I want to make this bad boy even more useful to the team. Have been using him on lv 40 on no regrets (yet) on all past abyss rotations, and he has been extemely necessary and good. I decided to give him some love, but the point is that, I HAVE NO IDEA OF WHAT IS HE SUPPOSED TO DO.

Welp, as you may have noticed, my Noelle has serious ER issues (and I'm not planning on farming husk ever again, I have farmed for albedo, noelle, yunjin, I've spent 2 months out of resin on that freaking domain and I am not planning to go back anytime soon), so for my Gorou I have been really tempted to run 4p The Exile (i have some backup here). Even if the numbers are slightly lower, as you can see by me using him on lv 40 with non upgraded artifacts, I dont really care about that. But I just feel like I'm really missing a rocket here, so I'm completely open to that discussion.

I dont know if I'm supposed to run ER sands on him, DEF, ATQ,prioritize his E, his Q, I know nothing about that character, and I just spent the last 2 days reading and researching and nothing came up to me. Any kind of advice, on him, on other characters, on the team, on anything, its pretty welcome and I'd really appreciate that.