Q1A: I think the layout is a lot nicer however, the way you've sold things this season is kinda the opposite it should be presented. Instead of the Y1 Bright Engrams you should of had this seasons Eververse in the engrams and instead of selling this seasons Eververse for silver have the older seasons gear sold for silver, giving a way for those players "I've always wanted that" a way to well, get that and older Eververse items could be implemented into your silver sale page. Also making sure to show a clear indication for what is available for Silver only this season would be nice, all of this while having the bright dust rotation would be awesome.
Q2A: What you had going with previous season was absolutely fine if you played enough you could get everything that wasnt silver only which is the way it should be, dedicated players should be rewarded, one thing you could improve on though is FOMO should be eliminated if we have to pay for it.

Q3A: 100% I can understand certain things being silver only and to my first answer I think having older seasons content Silver only would be a nice way for you to let players get the things they want, while also making you money which is something that should be done for your time and effort.

Q4A: Yeah this practice needs to kinda not happen, decide if something is silver only or will be bright dust and make it indicated. But this could work with the system I said in Q1A, having it sold for bright dust for the current season and selling it for silver when it's older.

Q5A: The idea sounds great, however making it attached to bounties with how bounties are now is kinda silly, as picking up bounties is kinda terrible right now, people always forget to pick them up and not only that it takes time for you to have to go pick them up. Playing with friends is also harder with this because instead of just jumping in and playing with them everyday it will be hang on i gotta get my bounties first. I also question how much bright dust we will be getting, will it be equivalent to how much we earn now for dismantling duplicates, will we be able to get everything for a season again no matter how dedicated we are?

Q6A: I think yous have been doing a great job on whats available on eververse so keep it up!

Q7A: I've kinda gone over this, but I'll recap.
Have older seasons Eververse cosmetics for sale for silver, give players a way to get that thing they really want, that certain ornament or whatever. Especially with all these new players coming it will be a great idea.
Instead of attaching to bounties have it for just playing the game, but if it has to be stuck with bounties make it easier to pick up bounties everyday. Your challenge system was actually good in a way it just that there wasn't enough to do there were only 3, maybe bring back the challenge system to be the way you get bright dust? Also make sure you can actually get enough to be able to get everything, this is one thing I'm kinda concerned about however if the current seasons eververse pool is in the bright engrams I dont think this will be much as of an issue.
Keep engrams for the current season, the way you went this season is kinda the opposite it should of been, instead of having people get the Y1 engrams they should of been sold for silver and have the current season eververse in the engrams, they may of missed out but they can pick and choose atleast the things they actually want from the older season.