It’s not necessary.
I’m seeing a lot of posts on here about how the Acolyte could tie into various aspects of the pre-TPM timeline as it existed in Legends, but I really think it’s important that they not get over-zealous with the references, and the set-ups for other characters.
I’ll bet my bottom dollar that we see an Old Republic series in the future, that we see Darth Bane in some expanded capacity, but those things will come in due time. I really just want the Acolyte to be confident in itself and the story it wants to tell. It’s not that I mind tie-ins, but I don’t want the series to be pre-occupied with filling in the timeline, and giving Pablo Hidalgo more fodder for his next reference book. I want it to be compelling unto itself. And, frankly, I have faith it will be.