If you ask me, right now is the perfect time for a proper Dragon Ball movie.
These days, with superhero movies hitting it big, the big trend that makes all the money -- and thus the big stuff you pump half a billion dollars into and get over a billion back out -- is imaginitive adaptations of weird works broadly fitting into the vicinity of an action genre, that are faithful to their source material, and unashamed of being bright, colourful, with a sunny outlook, but also potentially really damn weird, dark, or depressing when they need to be...
If a more straight adaptation of Dragon Ball was being tried 10 years ago, I imagine in the midst of Batman and Watchmen, with various companies following those kinds of trends, -- even unfittingly pushing that into Spider-Man with its third installment -- they'd be aiming dark, disturbing, and brutalist, probably skipping straight to the encounter with Raditz. And it would have sucked as a Dragon Ball adaptation, whether or not it ended up being a good movie; Dragon Ball is not Watchmen, so doing Dragon Ball as a dark, disturbing Zack Snyder movie would be utterly awful.
Though I imagine if a studio tried this, the Japanese side would turn them away immediately... Then again, Evolution happened...
So, anyway, right now, I could see a Japan/Hollywood co-production between Toei and Disney/Fox that does things right. Disney have plenty of talent from the Marvel side of things, and plenty of other talent who want to be doing that kind of thing, who would be perfect fits; Dragon Ball is a pretty good fit for the kinds of directors Marvel gets, who have a keen eye for comedy, can balance a large cast, ensures characterisation gives the movies a strong core, and of course, can really nail the action.
And it's not like we haven't seen how Dragon Ball could be adapted to movie form; Toei have already done the legwork on this multiple times over, you could literally just take the script from the 10th anniversary movie, Path To Power, give that to a great director, a great cast, etc., put a lot of work into just doing it right in the same way Marvel have done their adaptations right -- which is not to say make it like Marvel movies, what I mean is do to Dragon Ball what the MCU has done to Marvel; faithful, but unafraid of letting the creative guys put their own spin on it, and do things differently for the sake of a better movie, which is basically what Path To Power was anyway -- and you have a winner.
Plus, Alita: Battle Angel is a big deal right now, and whatever your thoughts are on that movie -- I have no opinion yet, as I haven't had the chance to see it -- it's apparently shaping up to be quite successful, so Hollywood is probably pretty receptive to the idea of a big, weird project from Japan like this.
So... I do hope something like this happens. Could be awesome. And presumably if it's a proper collaboration with Toei of Japan, they'd be able to have the creative oversight that ensures it stays true to its cultural roots... And probably casts an Asian Goku this time.
... Maybe also fulfill a dream of Toriyama's and bring Jackie Chan in; have him play Roshi. Not only would that be fun, but it would lead to the best payoff to the "Jackie Chun" joke from the original run, and he could probably give us quite an endearing take on the character who would actually hold up in the modern day, unlike his original anime/manga counterpart...
The point of Dragon Ball is to enjoy it. Never lose sight of that.