Thanks for the answers Khatovar, good news about granted levels also earning grantable levels - it does mean my accounts will get "out of sync" a little (even more than with one account losing out on them, anyway), but still - free levels are free levels. Presumably it'll cascade then, so:

40 levels earned by E when granted to D gives D 20 levels to grant to C, which gives C 10 levels to grant to B which gives B 5 levels to grant to A... etc. Of course there's only so far "up the chain" you can go, but I still think I'll have a play with a spreadsheet and see what I can do with that, seeing as my RAF runs out in about a month.

Too bad about the scroll, but I guess with the free 80, realm move and all that they don't want it to be too easy. No point in trying to plan for it anyway, if they haven't moved the date until now. They might eventually, of course, but with no data it seems pointless to try and guess it.