The MG HS Phev basically fixed all my issues that I had with the 1.5 HS when it launched. Very capable now. It is definitely the most value to money option at this price. Jolion HEV could also be considered.
The H6 2.0 is still a great car, better performance and stability due to all wheel drive compared to the HEV. If you are absolutely stuck on getting a hybrid, the MG Phev is a good choice.
I do not think that this is happening, instead I see a lot more sales of Santa fe, considering for a little extra premium you are getting a bigger 7 seater. I doubt that it will sell much without a heavy discount (much like the Santa Fe)