With Miller gone, things like set costume design have to be suspended until 20th Century Fox can find his replacement.
According to a brand new report from Collider, it appears that we can definitely expect some delays to the production of Deadpool 2.
Given these behind-the-scenes changes, the odds of Deadpool 2 actually starting production in March (not January, which has previously been reported) seem increasingly remote.
With Tim Miller no longer at the helm to steer the overall creative direction of the project, several vital aspects of production have been put on hold.