I was thinking about it yesterday and I really not entirely sure how feasible it would b to have a Greek-English LXX Diglot.
Now it would be absolutely fantastic to have the NETS on the page beside Rahlfs, but look at the page count of both of them. The volume would break 2000 pages and the page size of Rahlfs would either need to be enlarged or the NETS would need to be reduced.
I do really hope it could happen. But I’m not confident about it.