I did not find a way to ask the game for a "best fit" mutation of a single sidechain.

This would be similar in principle to a local shake or wiggle.

Why this would be useful: after creating a perturbation near a mutable sidechain, it would be nice to quickly see whether a new amino acid would accomodate this better than the current one.

Instead, I need to launch a global mutate ("M" key) for this, which can take quite long.

How it could be implemented : add a central "find best" area in the mutation pie menu. Alternately, add a "mutate" area in the pie menu in Pull Mode.

An extension of this idea : to be able to restrict "M" mutation seek to an isolated area, like we can for wiggle and shake.