re: Any updates from LSU on who will get seats and when will they let us know?

I'm not waiting to find out
The benefit if you opt in is you most likely will get some benefits with regards to future bowl games, etc.

The way I understand it is the cost of the season tickets will be what you have already paid including your TAF per your stadium assignment

My guess is if you have 4 tickets and you get 2, they will refund the amount for the 2 only. The other 2 will be charged accordingly based on the fee schedule they put out last week which is basically the cost of your normal season ticket.

Plus you know entrance and exit of stadium along with bathrooms and any type of concession will be a cluster.
I don't feel like wearing a mask for 4 hours in Sept heat at 230 along with dealing with those that end up showing up to tailgate anyway.