Hhhmmm, the SACTA version of NAS does not do all that NAS can and has to. I'm no fan of NAS but there is no off the shelf replacement (except maybe the new version of NAS). Also remember that the SACTA thats going into nPC will be treated by NAS as ScACC currently is, as an OLDI, not as a part of NAS.
I'll speak to my experts on Monday about what the SACTA system and the proposed iTEC replacement does and does not do. My current understanding is that it is a long long way off of being anywhere near replacing NAS.