Why doesn't Koush or someone else that knows how make an update that only updates the things that were changed between versions.
For example 22.214.171.124 installer would only install the fixed gallery and updated spare parts. Instead of doing a full wipe of /system every time. This means have to reapply themes every time a small change is made.
I understand this isn't ideal for major revisions like 5.0.6 to 5.0.7, but for small patches it would be much easier I think.