Thanks for the responses guy. Shame it isn't possible right now.
@Mark I have quite a number of one-to-one relationships with forms and landing pages. So I've got my work cut out for me if I want to update them all to the new editor. The functionality looks better but it is a bit frustrating that I've got to remake the lot to be able to access it.
@Jerry looks like someone got in ahead of me from Cathal's link above so I've liked that. Hopefully it'll rise the ranks and a solution will be surfaced.