I agree it'd be a nice option for them to provide, but I don't believe making it the default for every customer is a laudable goal.

If vacuums are hanging/causing locks and these truly are just test tables, it might be beneficial to use temporary tables instead as the autovacuum daemon ignores them. Additionally, unlogged tables that reside on a memory disk can be insanely fast - might cut some additional time down depending on your data.