To GGG. Some nice changes to this

Hi everyone! I want to share some ideas that came up to my mind this last couple of weeks. Some are regarding trading and others just quality of life improvements that would be nice to have.

Auction House
As said in the Zizaran interview, PoE 2 is going to have an auction house that works with gold as a tax, but because there is no gold in PoE it is impossible to get the same system. Here is a solution to that, Pedandus Coins.
They were removed leagues ago, but with the "bring ghosts from the past" trend that GGG is having, it seems quite alright for them to make a comeback.
This coins could be dropped by any monster and should not be tradeable, just like gold in PoE 2.
Also, a couple of other things like the basic currency orbs or quality orbs from vendors could also be sold by Perandus Coins, this is to make them useful in SSF aswell.

Boss Sets
As for right now, no one uses the main trade site to trade full Elder/Shaper/Sirus sets, because is a pain to do so. It requires a specific line in the listing price that most people don't know about. So, a lot of people resort to TFT for doing this and sell the sets in bulk.
My approach would be make the fragments combinable by putting them in the right order in your inventory or stash tabs, this way you would get an itemized version of the set and could be easily sellable in bulk through the main site.
Note that the fragments should not combine automatically in the fragments tab so people can still sell them piece by piece.

Uber Bosses
Getting access to the Uber version of the bosses should not be something that forces you to spend 3+ points in your Atlas Skill Tree.
With the itemized version of the set, it could be possible to talk to Kirac (The Atlas and Maps Guy) to upgrade the set to the Uber set in exchange for Perandus Coins.
I don't do this bosses myself, but this is just because is an inconviniance for a lot of people to have to put those points when you want to do Ubers, and take them out right after that.

I hope this reaches the right people and maybe inspires some changes to this systems.
I would like to hear some other ideas that people may have.

Hope everyone has a great day.
Greetings.