Crab,
The Wildcat doesn't bring anything new to the party except crashworthy seats!
Er, it keeps the AAC in aviation as without it the RAF or RN would have made a strong case to take over Apache as the AAC would have been unsustainable with just Apache. The only reason you are getting a replacement for your obsolete Lynx is on the back of the RN's very strong case for Wildcat, MOD was not prepared to give you a different type of helo so it was "take it or leave it".
Sad but true.