While electronic groupsets offer impressive performance and reliability, Im curious about the limitations of shifter compatibility across various manufacturers. Are there any clear winners in terms of interoperability, or are we seeing a trend towards proprietary systems that lock users into specific ecosystems? Specifically, what are the implications for road cyclists looking to upgrade their existing mechanical groupsets to electronic shifting, but who want the flexibility to mix and match components from different manufacturers? Can users realistically expect to be able to swap out shifters from one brand with derailleurs from another, or are there technical hurdles that make this impractical or impossible? How do the various manufacturers approach shifter compatibility, and what are the key differences between their approaches that users should be aware of when making purchasing decisions? To what extent do open standards and protocols, such as MicroShift or SRAMs eTap, influence shifter compatibility, and are there any efforts underway to establish a truly universal standard for electronic shifting? What are the potential benefits and drawbacks of adopting a more standardized approach to electronic shifting, and how might this impact the overall user experience?