Long story short -- if you favour NNTP use gmane. We don't intend to move away from our mailing list approach.
Also bare in mind that we have a better mailing list archiving tool on our wishlist for quite some time. Perhaps in the near future someone will address this -- then it might be possible to follow our lists with -nomail, whilst still being able to grep the archives, more easily. Depends though how such an archiver tool is designed. -Anselm