At that point, why not just have a box set of I-VIII with a spot reserved for IX?
Other than “because by that point many fans will probably already have bought TFA and TLJ”?
Not to mention the slippery slope of “do they stick to the main saga or do they throw in Rogue One and Han Solo as well?”
If the remaster is done correctly, I’d pay damn-near any price for the OUT, even if it’s in a big giant boxed set of other stuff.