I love my Aero but I do wonder where it is going to end up - the lost child.
The new owners need to work it out quickly, as you highlight the impending UK legislation with no options for small volume etc means the door is closing fast.
If I were to be a tiny bit cynical I would say the introduction of the offer is intended to drive people to buy new and spec their own car, thus keeping them from buying the secondhand stock that is readily available in the market. From a manufacturer point of view the factory needs to be busy, if the secondhand stock is sucking up the sales and the dealers will probably take a bare minimum of demo cars then there is an issue with new volume. It's a sensible thing from the factory point of view