Hi Queen Vãnilla!
All of the Star Guardians are in the 7.17 build (which is the current patch), and as such, won't be receiving additional changes.
For a bit of context, changing the processing of a particular character's voice isn't feasible once content hits PBE. It isn't a filter, but rather, each line is processed individually. In Syndra's case, it was a conscious choice not to alter her voice, partially because we didn't have her unprocessed VO to work with, in addition to the team deciding early on that it wasn't detrimental to the skin's thematic/experience.
Hopefully we'll be able to share more with ya soon! ^-^