I've already made my suggestions. However, in discussing with others (MAD, Jarhead, Philstyle, AH71-Rob, et al.), a few ideas came up that I thought were worth mentioning.
1. DCS has the mechanism to do carriers. Is there any WW2 aircraft carrier that would suit and the plane to match it? The suggestion I heard was to do A6M-v-F4F, which I don't think makes sense - it is too far removed from what we already have. But I am wondering if there is something in the North Atlantic that might work?
2. As an alternative to the Ju 88, there is the Me 410. It was used in KG51, so it is suitable historically. There are also museum examples (e.g. Cosford, UK). I personally think the Ju 88 is a better choice, but the Me 410 is certainly a strong and suitable alternative.
3. Historically, the Hawker Typhoon was used in large numbers and would be a suitable addition. In order to try to maintain historical consistency, it would make more sense to implement a Typhoon in preference to a Tempest. The P-38 is also a contender in this regard, with the advantage of being a twin. Personally, I think the Mosquito is better, but from an historical-numbers arguments, these are good alternatives.
As I said, none of these would be my choices, but I am just reporting them here in the interests of broadening the debate.