I don’t want to dampen your enthusiasm and I sincerely hope I don’t, but in my opinion, I think such a page is too large and possibly even outside the scope of Wikizilla.
That doesn’t mean, however, that it’s not worth cataloging. Because I certainly think it is. I’ve been using Newspapers.com and other archival sources for several years now to record broadcast information for most tokusatsu movies scheduled on US basic cable stations through 2010 (just an arbitrary cutoff date), all for my own use. I can’t be certain that these are ALL the times these films were broadcast or even if the films as scheduled were broadcast — both of these of course are further difficulties in logging this information.
All that said, I’m not on the staff, so consider my opinion a suggestion at best. If it’s something you’re passionate about then I hope you’ll continue to dig into it. I just think it might be better suited for a personal website or blog.