Not if we do the mass revbump.
A process image that's all old stuff (old executable and old libs)
will work fine. A process image that's all new stuff (new executable
and new libs) will also work fine. If you mix old and new stuff in the
same process, e.g. if you recompile a program but not its libs, or
recompile some libs but not every program that uses them, it may blow
up at runtime.
The mass revbump insures that newly compiled stuff will be all new.
There's no better or less drastic way to do it, because there's no way
to encode the necessary dependence information in ELF program images.