I think one package (probably the smallest) should be like the highlights package and set aside for terrestrial broadcasters. It would help break up the Sky monopoly.
Have the smallest package set aside for terrestrial TV and then also make it so at least 2 of the remaining packages are safe from whoever wins the most bids (Sky).
No more than what Sky + BT is going to cost I'd imagine. May as well cut out the middle man for those two extra packages. Even keeping it on ESPN would've been preferable as they've already got other stuff (FA Cup and the UEFA).