Oh please, please do. From what I can see, popular opinion is that it's high time to migrate to another more up to date language, but resources on Haxe, and specially HaxePunk (as pointed out before) are really scarce. I'd very much like to see an intro/tutorial by someone who has some experience with FlashPunk. Regarding HTML5 (and I've shared my thoughts regarding it with @Ultima2876) I just don't think it's a good idea for games, and I'd really hate to see the FlashPunk community migrate to HTML5, because I'd most likely stay behind. The way I see it (which is the view of an inexperienced, self-taught programmer who still uses an unhealthy amount of static variables) HTML wasn't made to make games or apps, and I just don't feel comfortable using it.
Best quote award.
That would also be pretty neat, for there to be an "XPunk" site with different engine sub-pages.
I can't speak for myself, but that does seem to be the case, from what I've heard from people who went to the HaxePunk forums. (No offense to them, but I've heard mostly negative feedback)