Funny thing, last night I lurked in the MA to try and observe Yak3 use, combat, VOX and text comments about the Yak3. Everyone was in everything but Yak3 other than a single one I saw actually fighting and he was killed shortly after that. I saw a few taking part in a bish all hands country raid on a field but, all they did was de-ack while late war monsters swamped the local defense fighters. I think Oceania with all the water ways causes players to think range and speed and alt even though I made most of the water ways 19 miles wide.
Because I spent the time focusing on rides it was obvious most players are concerned with cannons(fire power) and speed. Speed is probably what makes the P51D such a good general package and is used so much. After that I saw Dora, spit16, N1K2, G14, F4u-4, Typhoon, P47 and a few FM2\Wildcat. Ki84 were as rare as Yak3 last night. As for La it looked like the 56th traded in their Jugs for La's.
So it may take a different map to really observe the Yak3 in light of my recent testing.