This is certainly an interesting turn of affairs for these classic Toei series, although understandably a lot of anime fans on other forums don't like the idea that these are only compilations and not the original unedited series. I can only fathom that from the outset, Toei never intended to sell these to the mainstream English-language anime audience, but rather targeted to more of a kidvid market, or perhaps even to older science-fiction fans who will not only recognize these older series, but also be fully aware of the voice talent Winckler has employed, most of whom have notable science-fiction/fantasy credits.
Even though these productions will be edited and almost-certainly dub-only, I'll check these out whenever they get released. I can see the reasoning behind Toei's strategy on these shows, since most of them attained reasonably high degrees of popularity in many other countries where the series were shown on TV back in the 80s and 90s, but were never truly successfully sold in English.
I guess it's nice to see that Toei still have faith in such older series, but honestly the time to have marketed these to their optimum potential in the U.S. passed a decade or two ago at least. So while this will make for a fascinating experiment, I'm guessing we probably won't be seeing any further dubbed compilations in addition to the titles already completed last year.
The only real question now is when will the compilations be released, and in what format? William Winckler Productions has mentioned DVRAB, and I really hope this happens rather than an exclusively digital (and region-locked, since this is Toei) route. With Toei remaining silent on this, and the company infamously having their own very idiosyncratic ways of doing business, I'm guessing any release of these will be a long way off.
Toei's complete silence on the issue has actually got me thinking. The thought occurs that Winckler may actually have 'leaked' new on these 2008-produced dubs simply in order to spur Toei into doing something with them in a reasonable amount of time rather than leaving them on the shelf. In any case, it'll be interesting to see how and to whom Toei does intend to sell these, presuming they want to recoup the production costs to dub all these highlight movies.
I don't think Toei can offer Grendizer or any of the Go Nagai-based series for U.S. distribution since every time they've mentioned potential releases of their classic shows in the U.S., they've skipped all of those titles, including fellow Force Five title Getta Robo G and even Mazinger Z.
I'm guessing Go Nagai maintains some sort of additional control/copyright over these series, and Toei doesn't want to pay extra to Nagai's Dynamic Productions to get these cleared for a U.S. release. Gaiking seems to be the exception simply due to the original series going out without Nagai's name on it, even though he has retroactively claimed authorship of the original idea.