StSanta,
Regarding the "gain altitude while looping". This one is interesting, and I'm not even a grognard on this issue. This was noted early on in beta, and folks said it was wrong. The Rats said, "yeah we thought so, too. But we can't PROVE it." So a long effort was undertaken to prove that a Spit1 couldn't gain altitude in loops to a certain point under optimal conditions. No proof was found.
Tests in WB and AH showed that you could do the same thing, to a degree (if I recall, it was easier to do in AH than in WB). There's plenty of anecdotal proof of "infinite looping given enough fuel". The world record was set in like 1930 in a Tiger Moth with like 900+ loops in a row by a woman. Since then, numerous accounts exist of pilots doing 300 or so loops in prop-driven planes.
Two likely reasons why we don't think much about it is because A., it's very hard on the pilot, and B., it's not a valid ACM move.
That's not to say the WW2OL FM isn't missing something somewhere - it is. It does retain E too well, and the Rats know this and are looking into where and how the problem happens. Several people have been working directly with Hoof on the FMs, analyzing them in minute detail, and there's some drag issues being examined. I'd expect the FMs to be tuned before the "war starts".
Spitboy -SW-