What about implementing Megatexture technologies in Paged Geometry? I think it will be very big step and many Ogre users will be use it!
P.S. Sorry about my english =)
Megatexturing technology wouldn't really benefit a project like PagedGeometry. Megatexturing is used mainly for terrains, because it eliminates the need to tile ground textures over and over (because the terrain can be textured with one giant texture). PagedGeometry is not a terrain engine, but a tree engine, and trees would not work with Megatexturing very well.