Creating a fork is not impossible.  What is likely impossible will be convincing the bitcoin community to incorporate your fork which, to me, addresses only a temporary and minor adjustment occurring at known points of time in the future.

More importantly, I think you significantly overlook a little detail.

Bitcoin absolutely relies on trust.  Trust that the rules (the protocol) will not be mucked with.   That the protocol can survive as-is, and not require a change whenever someone comes up with suggestions for improvements or perceives it to somehow be flawed.

Fortunately, if a serious issue does appear, it is technically possible for the protocol to be added to or modified.  For something like this though, that probably won't be happening.

[edited, removed strikeout from words]