Movies that are going into production right now are in something of a difficult position because, due to the ongoing WGA strike, no writers are on the sets of the movies being filmed. This means that, among other things, there can be no changes to the scripts as they currently are. This could be a problem for Deadpool 3, where the jokes are often not scripted in advance. However, Deadpool’s comic book godfather Rob Liefeld points out that it may not be the problem it appears to be.
While Ryan Reynolds has pointed out that he doesn’t technically ad-lib in the Deadpool movies, instead he writes multiple variations of a joke and tries them all out on set to see what works better. However, both options are off the table as things currently stand as no changes to scripts are possible until the current WGA strike is resolved. But as Rob Liefeld points out on Twitter, the big changes don’t happen on the set, but in the recording booth during post-production.
