Every once in a while i like to switch to the End to End Camera, but only when i am facing the opposing goal though. I think it definitely helps in attack since i can see the passing lanes going forwards better, and i take smarter shots since i can see more clearly where the defenders are so i don't take a shot that will obviously get blocked but i wouldn't have seen as clearly with the default camera. helps with finishing too, especially during one-on-ones with the keeper (especially when the keeper comes out so you aren't surprised and have time to chip) and long shots where you can aim for a corner. overall just a fun camera angle that feels more like playing in real life, and gives a good change when you get bored without the awkwardness of a camera angle change that is close but not quite to the default.
Downside to end-to-end is definitely playing defense though, kinda hard to play defense running backwards and not be able to see behind you although you do miss less head to head tackles as you can better aim where youre going. I basically only use this camera angle when i am down and playing away in the second half (camera faces opp goal in the 2nd half when you are the away team, and i always seem to be the away team) and need some offense.