Well MMC have already said that 2 and 4 will happen and 1 will happen but for a limited time frame if I recall correctly.
3 I can't see them investing yet more on another chassis for a while mostly due to 2.
The old Aero chassis I would say has timed out as the CX would appear to outperform it.
We shall see what happens, but the good road reports the CX is receiving will do them a power of good and attract a different customer base which was the whole point of the exercise one imagines to placate the new investors for them it's only about the money.
The pistonheads comparison with the F type is an inspired and lucky one for MMC I would say as far as trying to change your customer base goes.