It seems Legendary Films who made last Godzilla movie will make this. It does need a huge budget to work at all. Will the movie be about Pokemon coming unexpectedly to our world, will it be set in the Pokemon cartoon world, or something else. Will Pokemon be cgi or animatronic?
Should it be made? No. I figure a limited audience like the Mortal Kombat and Resident Evil films. Probably a bit more but I cannot picture Transformer profits.