I'd be happy if we could create a ready-to-flash image with rootfs on an (appropriately sized) ext2 partition (/, /boot, /usr, etc.) of the eMMC and a separate /home (ext3 or ext4) partition. The current rootfs partition on the NAND could be either used as swap, or as a sort of "executable cache" (like SSD/HDD hybrid -> NAND/eMMC), or just left empty. Obviously this would mean that the whole THUMB2 issue would be rendered moot (space would not be a problem anymore). Perhaps more important (but also more difficult) would be a HARDFP recompilation of the whole of Maemo