IIRC, collab events are a one-time exclusive - unless they do another collab in the future buuut that is unlikely, I'd think? Bandori and Love Live might return because they're all under a parent company through Bushiroad but I don't think that'll happen with Miku.
I could be totally wrong though, but I'm fairly confident about this, I don't think I've ever seen a collab event return?