Scoop foredeck for VTOL’s?
No. The initial plans were for the Queen Elizabeth class carriers to use STOVL aircraft (the F35B), with the capability of later upgrade to F35C or similar aircraft, but with changes to the F35 program making the delivery of F35Bs far less likely, it was decided to go straight to the later configuration. The 'skijump' has been retained because it is still useful for non-STOVL aircraft - even with a catapult assisted launch, that up angle increases the weight you can launch over a particular distance.
And yes, the QE class carriers will be smaller than US carriers, but will be larger than anything anybody else in the world has. As it is unlikely the UK will be going to war with the US in the near future, they are big enough.
(The next generation French carrier may also wind up slightly larger than the Queen Elizabeth class, but, again, war with France seems unlikely).