Fine, i'll just keep all the non-snapshot tags for now.
There's no reason why we have to keep all the tags in one place.
Further, we can import them all, and then later remove, move or rename them and these things seem to be versioned(?). I can't imagine that the size of tags would matter, I think we should do that. We could even move old tags to a directory called old if we wanted to, to help sort out the chaff and reduce clutter while still allowing people doing archeology to be able to easily find them. It seems safer to import them all, and then remove them in the new system, as it seems to be trivial to restore any mistakes, while, if they go missing in the import, putting any tag back would be, uhm, hard.