uSync.Migrations has entered phase 3 ! (
https://github.com/Jumoo/uSyncMigrations/releases/tag/4.0.0-phase.3 ) I have no idea how many phases it will have, but now you can get a zip file of a v7 site (the migration packer can do that bit for you) and do a 'one click'ˣ migration from v7 to BlockLists & BlockGrids in v10/11/12 🤯
ˣit might be two clicks.
ˣˣit might not work if you have custom property editors etc - but you can write mappers for it
ˣˣˣit will then take you longer to migrate all your code
ˣˣˣˣits not my fault if it all breaks do this on clean/sites you don't care about/have backups for