> So maybe this will be a net good for justice?

It would have been admissible against anyone but Epstein even if Epstein hadn't died, and further warrants derived from information discovered through it (including reseizure of the same evidence under a new warrant) wouldn't, as I understand it, be precluded unless it was to be used against Epstein, all for the same reason that the right to object dies with Epstein, so it does nothing for justice except preventing any Constitutional violation from even being recognized, which is a net loss, not a win.