WHile I'm gonna say yes another free retainer would be most welcome.. I gotta say my fishing retainer is probably the most useless. I use hunting more than fishing.
People are usually referring to the way the old system doesn't translate well or easily to an entirely different games system.. Go take a look at old developer posts about why the inventory was changed to the new way it displays and why you can't change glamours outside cities for more actual technical information. The system has a lot of problems because it still holds a lot of structure from the old , very badly thought out, inventory system and reworking it involves ripping out and writing in an entirely new system and reference for items and appearances. If you want a TLDR: Far too much cost and labor for the company to even consider.