Getting copy of bound to legacy armor from collection shouldn't be a big deal, because I'm already able to transfer it via legacy storage. It will simply be small and nice improvement.
Seeing all armors that you encountered (purchased) during the game at collections will allow players to use some old and cool stuff more. Some things are getting neglected and forgotten simply because content is already very much old. For example, I went back to Czerka daily area by a chance and picked there really cool sword of Vigilant for one of my outfits. I totally forgot something like that was there.
Coming to think about it - having all reputation items visible in collections for everyone (including info on how to get it) is actually promoting game content and rewards that are worth spending time for.
Thanks everyone for sharing their opinion on this topic! ❤️