Thanks for the answer Dawn.
I was thinking to use a Whitelist instead of a Filter, I don't think AuraBars supports a Whitelist and that is one of the reasons I was thinking achieving something like this. And I never know when will the developer of AuraBars stop supporting so I prefer to trust to myself the updates.
Ok, I'm still a bit blind into the matter but I'll look more into it, if I don't succeed I'll just integrate oUF_AuraBars and do what I want with it.