Plus like with the MCU they'd have an actual plan and vision for their Cinematic Universe and follow through with it. MCU did a great job with finding Directors who would work out amazing films while still following their general vision or outline for what the studio/producers ultimately wanted...
MCU is already pretty busy and crowded to be honest. Id prefer seeing, if there was a crossover film series, they could do it with that other old licensed setting known as GI Joe of which they've had plenty of comics based crossovers already. :cool: