Several ideas:

BOGO Award with Paid F - if a 100k buys a F cabin fare, AS will [force] open saver award F inventory on the same routing for a companion, assuming the miles for the companion are redeemed from the 100k's account.

Use GGUs to Force Low Level Revenue Y [e.g Q] fare → Y Saver Award - Basically a way to juice inventory in Y for 100ks with use limitations (i.e. a 100K can only do this if they've got something - I'm using GGUs here - to support the request); yeah, know it's Y but AS allowing this to be used, particularly with a partner award would be most useful.

Allow 100ks to use GGUs on AS Y awards - self explanatory.