I think I have a solution (that I haven't heard others mention) to the clunkiness of the current arrow fuse system. It's not perfect but I think it would improve things by miles.

Since multiple items grant the same effects when fused to arrows, it would be awesome if we could pre-make fire arrows, ice arrows, shock arrows, bomb arrows, and homing arrows, and easily swap to each type similarly to BOTW.

For example, in the inventory menu I could fuse arrows to 5 white chu jellies and 5 ice fruits, creating 10 ice arrows that I could swap to and fire all at once without having to re-fuse each time.

Homing arrows are a bit more difficult, since fire keese eyeballs create fire homing arrows, and ice keese eyeballs create ice homing arrows, etc.

Generic arrows with increased power (fusing horns) are also a bit harder since there would be so many arrows of different strengths.

Either way, I think having the ability to create and store fire, ice, shock, bomb, and homing arrows would improve the slow-moving arrow fuse system by a good amount.