She'd have made a frightening opponent for Refit and Repair.
What problems with machinery? Was she one of their odd steam/diesel propulsion experiments?
To early for diesel. She was fitted wis high pressure steam turbines. They were a pure pain in the ass for any engineer. Further the new 15" gun (two years before Bayern-class) was a big step forward. It made a very large turret neccessary and it was believed the barbette had to be as oversized. The turning mechanism failed sometimes.
Now what do we do with big good looking ship with that problems and only 10 years old? You can't sell her you can't use her without heartattack. Rebuilding would cost nearly as much as a new ship.
In this time period, reconstruction would be an option- especially into a carrier, which was a very popular option at this time.
Also, the diesel/steam powerplant is NOT too early- the
Konig class had two units with two shafts powered by steam and one shaft powered by diesel in 1914!