Or they could just realistically boost the tomes you get for the older 80 dungeons so that those going through MSQ can gear up faster?
The problem is with IL sync in Amaurot and the like is that many new players going into Amaurot/Twinning/Akademia are rocking lvl 79 forgiven gear. So that sync is there to help them out while they gear up. Personally I think the most realistic option they could do is just boost the amount of tomes you get from the 5.0 level 80 dungeons.
That's a big problem for new players as they have to entirely gear their belt/right side and some players I've gone into roulettes with in some cases don't even have their AF gear (which is still a big issue when the game basically gives it to you for free.
Increasing tome count keeps players in there and gives more value to those rous.