Hi Rahman,
I believe the best option for you would be to contact local Extreme SEs or the reseller who supports you, so they could lend you a 200 Series switch to play with it, or to setup a lab and show you kind of PoC with functionalities you want to see working. How does that sound for you?
I agree that at some point uncertainty can become frustrating, on the other hand there are almost countless options with XMC, they also vary over time so I can imagine there is some challenge to synchronize development team with documentation team every time a minor or major update becomes available. But I believe they'll eventually manage that, kind of a feature matrix is always more reliable and convenient than diving into different-fashioned datasheets, command references, user guides or even DIY setups just to confirm if something is working or not. Finally, here is the community so I hope somebody with more hands-on 200+XMC experience can also come here and provide you with the knowledge. 🙂
Kind regards,
Tomasz