Istvaan showing me that I am not worthy. That is some awesome work on your minis, I wish I could paint half that good. Warhammer is a game ive amazingly never tried... I should someday, though I hear its gotten very pricey. Still, gorgeous minis, and looks like you have a lot of fun painting them.
For WWII rules, I have used Seekrieg, an assorted handful of free rules found through TMP or other places, and Command At Sea. GHQ's "Micronauts" are going to be the next I try, as I reeeally like the look of them; not as insanely complex as Seekrieg, not as simple as Command. I also have been working on my own set of rules, a medium in complexity between Seekrieg and "bare bones" systems.
And yes, Yamato was heavier than the Essex class by far; on the tabletop, though, I was pretty much talking about size of the models in terms of Length and Width. If only Halsey had left Lee's battleship force behind... Yamato might have met a more fitting demise!
Ava