Do NiM for related gear when it is current or don't. This 'no child left behind' mentality is destructive and will never happen. Put yourself in a position to do the content for the BiS gear like everyone else who runs it has instead of devoting the time posting about refurbishing loot tiers to accommodate your lack of progress in the game.
I guess I didn't get my point across well. The goal was making the gear from NiM relevant for a LONGER period of time and being required to get BiS mods/enh.