Threeboot is now slightly more marginally possible than previously.

[AnimeJanai]

If they can reboot Legend of the Galactic Heroes with updated animation techniques, then they could try that with the original Bubblegum Crisis. The OVA episode content is long enough that it could be subdivided into 12 episodes that fit into TV slots. But I bet Toei won't do anything that could cannibalize the audience of its existing anime lineup. Since Toei has right of first refusal with Sailor Moon, they really should make a "crossover reboot" or would that be more accurately a "reboot crossover" between BGC and Sailor Moon sans the Sailor Loon? Could a crossover survive without the Loon?