Here are some few showcases I have about the subject matter: 12-3-2 showcase, 12-1-1 showcase. I opted to cross-reference to this video: fully invested 4-geo 12-3-2.

(While I have no idea of knowing if the other person's video was properly optimized, mine were done in one run either. Plus, my albedo and itto are dogshite compared to his lol)

Either way, while abyss clear times aren't a clear metric of strength, it does show to me the relative weakness for a non-c6 gorou: it doesn't really buff enough. Moreover, for this abyss specifically, healing becomes a relative problem on a 4-geo team and no other healers really synergize with itto and albedo. This does open up one other option, the failsafe solution: benny xiangling.

The point of this post is not to demoralize you into thinking gorou is useless, but to open up potential comps that would otherwise be better or on par with a 4 geo team. One of Itto's main striking difference versus Noelle is he doesn't really need ER, or to be batteried: Ushi does like 4 particles sometimes which is whack. Ushi also hits like a fucking truck. With this non-ER reliance, this opens up many possible comps for our boi.

Now go forth, my children. (ﾉ◕ヮ◕)ﾉ*✲ﾟ*