Peter Motschmann

They aren't queueable because changing the template would change the queued mechs.

If you have a save file from when it wasn't working, that would help tremendously to isolate any potential issue.

CNR

There's no plan to add alerts for Idle soldiers, but adding alerts for new unlocking features is something I plan to add to the game.

was fixed in 1.3.0

Why would you try to hit genetic decay? It's a purely negative outcome with no rewards or feats.