I think there are absolute negative effects to just about every change because of reasons like invalidating muscle memory, unintended consequences, documentatio

I think there are absolute negative effects to just about every change because of reasons like invalidating muscle memory, unintended consequences, documentation synchronisation, config options, and the chance of introducing bugs. If one cares about certain things a lot, these effects may be larger than developers expected. For example, if you are blind, user interface changes may suck a lot more than for sighted people. Changes can still have net positive effects, however.