I believe this change is a good one and is by far the easiest to implement, I called it the preparation period.
It provides the necessary safety check for the system and allows for voter mobilization.
It also, albeit not perfectly, allows the UNI/ETH LP tokens to participate in the governance matters if they’re perceived as critical.
I also support the concern that 48 hours might not be enough - but it shouldn’t be more than a week.
I don’t think that the preparation period should be shorter than the voting period.
If anything, it takes more time to review, audit, and discuss than to vote.
I could see a 6-day preparation - 4-day voting sequence working fine, as an example.