This is going to be outing so name changed. 
I work at a job centre and hate it. I am a “top performer” in what staff are measured against, so I am good at the role and can handle the very high pressure environment; but it’s not what I want to do forever.
Beyond that, my manager cannot stand me. We’re cordial but he has his favourites and no matter how well I do he rarely gives me recognition. It stemmed from last year when I needed an emergency day off due to my daughter being unwell and he was awful, the union got involved and now he holds a grudge.
There is an opportunity for me to join another team that is underperforming. Pros: it would be easier work & I would get a new manager so fresh start. Cons are “stepping on the new team’s toes” as I would be the deputy team leader. This would possibly annoy the current deputy (who management have blamed the poor performance on) and maybe other team members they’re friendly with. The performance is not easy to rectify so I could be leading a sinking ship so to speak, I definitely need the rest of the team on my side.
Aibu to take on the new role? It’s a side step move that may or may not pay off.