Personally, I'm adverse to the action of fixing things that aren't broken, especially when your own place has had plenty of experience with backwards riding providing a negative effect on the rider...
If it wasn't for the revelation of Six Flags (for a weekend only trial, which I think will fail because of the level of intensity Batman gives off at normal) and Universal Japan (Backwards Hyper would be interesting actually, only ride I would approve of here) both going backwards as well, I would say Thorpe are doing something immensely stupid by themselves without the help of B&M, but clearly there is a word in their ear about it...
Still think it's a needless addition to their best coaster though... Plenty of other investments the park could make into their own infrastructure in an attempt to bring back returning guests on a regular basis, but this won't cut it... I'm playing the skeptic card once more towards Thorpe because it seems they just cannot do anything good in between coasters... And I do believe that there will be immense levels of downtime (looking at NWO as the example, had to put lights on to stop people throwing up and it semi-worked...) and eventually it'll go back to being forwards again...