Just a thought but as a variant, would there be any reason why giving a plot to your opponent to increase the point spend on your team wouldn't work?

Or for that matter giving him the choice of all the plots at that value?

The first is problematic, since you can give them something you know is useless. Like taking ground when your characters already roll poorly for the battlefield, or the extra shield when you're playing a mill deck.

The second is basically just a step away from just seeing the points value higher, so why not just do that?