We should send as many as we can. Including our later versions (2A6). They are getting to end of life anyway and we need to launch a full replacement project anyway.
I used to be more bullish on the MPF, but I'm starting to realize there's options there that might fit better as part of a family. For example, look at the options for the Swedish CV90:
We need a substantial rethink along the lines of what the UK and Australia are doing (heavy tracked and medium wheeled fleets each). But this needs to be part of a substantial doctrinal rethink and preferably an update on foreign and defence policies that lay out where our government intends to use military force and the anticipated threat levels we should design our forces to counter.