If this was a TV series we would have gotten Season 3 all over again and I don't want anymore Jurassic World jeep headlight eyes and Teenage Mutant Ninja Senshi frog mouths for the guardians. The movies were a good idea as far as the budget is concerned. Not too mention, it's my guess they have been working on these films for a long time or maybe a few years to release them like this. No idea how Deen was involved but when two companies coproduce together, the film supposedly gets a bigger budget because both studios get funding for the same film.
Also, a TV broadcast has its restrictions on what they can show during specific timeslots and if you put the Dream series in a late-night time slot it will get no traction to earn enough profit, if you put it in an early times slot, some of the scenes will be censored and it won't be a true adaptation that Naoko will approve of, if she has a pitchfork behind the scenes regulating what gets cut or not.
As a film, they can get away with a lot more, get a bigger budget for the scenes, and attract more eyes and make money which is what their ultimate goal is, or really Naoko's goal is to make a strong presentation based off her exact work while making money, the phages (execs) of Toei just want the profits...lol
Kon also seems dedicated to the project.. Poor woman sitting in her office looking like a Kisenian blossom is on her chest sucking every drop of energy she pours into the project.
They needed this because I can probably guess that the newer transformations, attacks, and ither flashy scenes cost money and they have to cut corners where they can with how much they are given to use.
A TV series seems like a great idea until it's actually not.
Also, the Outers look really good. C'MON Queens!!