Think more selflessly then, if you want a Henshin Con you should have it in a location thats convenient for the majority, especially since there have been very few Toku themed cons and the community is small and mostly is just Rangerboard, HJU, and a few more sites.
And DragonCon is pretty major but you probably have a few more smaller cons, most areas do have small cons that many people in the fandom don't hear about. For me it was Xanadu Las Vegas, which was apparently around almost as long as Anime Vegas but I never heard of it until this year.