It's difficult to reason 'why' a particular model was/is chosen as there are so many factors involved in the process. It could be that as it was such an unusual subject and one not replicated in fsim for a long time, it would be a winner (as in break even) in that particular market. It might also be that they had sufficient info to put it together where other, perhaps more obvious choices don't have the necessary info.. yet. It might also be that some of these 'more obvious' choices (and who's to say what they are) have been done to death already.
Granted, the Scimitar would be an unlikely choice but.. note that they already have a Sea Vixen (albeit an old model by todays standards) AND they have HMS Eagle on the blocks. You have to decide what era you want the ship to be in and then furnish it with the correct aircraft for that time.. that is if you have all the necessary info available. Eagle is expected to come with AI Scimitars and that package will compliment the 'standalone' Scimitar and Sea Vixen. Plenty over there are shouting for a new Bucc so you never know.. a new one might turn up in the fullness of time.
Why the Scimitar.. well, why not

ATB
DaveB :tab: