TLDR: Yes, it makes sense to get a new blade for LYJ if they want to do it, just as it made sense for TB, ZJK and FZD to get new blades if they wanted them. You seem to know little about the Viscaria brand and how it survives player specialization and not realize how the composition has been given a different handle for many players already.
The original Viscaria predates and survives the Timo Boll Spirit, Timo Boll ALC, Fan Zhendong ALC, Lin Gaoyuan ALC, Zhang Jike ALC, Kenta Matsudaira ALC and many others I have neither the time nor the patience to name. There will be new players getting new rebranded Viscarias named after them and some blades retired after sponsorship deals are over. Even the LYJ SZLC had the same composition as the ZJK SZLC and the FZD SZLC but with different handles/balance.
The Viscaria SALC will do the same. It is already and extremely popular and great blade. By all means, Butterfly can rebrand a version for LYJ if he wants it. But as you can see from the above, the Viscaria did not die when it got rebranded to the names of many legends, including a World Champion. So there is *no* need to kill the Viscaria SALC just to give LYJ a blade. Your pushing this makes me wonder whether you know how old the Viscaria brand is and whether you are just so unfamiliar with it that you think it makes sense to kill Viscaria in SALC for a player, when the player is not even bigger than FZD who has his own SALC which the Viscaria SALC exists besides. So yes, it makes sense to get a new blade for LYJ if they want to do it, just as it made sense for TB, ZJK and FZD to get new blades if they wanted them.