IMHO, the TCA grading system does not need to be changed. A second, separate grading system could be established for the operational condition of the train.
There are still plenty of us who aren't interested in technology, and we do not need to be burdened with such a grading system.
How would such a system be defined? Would an older technology that is fully functional be graded lower than a newer technology with more features?
I think it has to be up to the buyer to know what they are buying when it comes to functionality, features, and compatibility.
If all the features work as designed, regardless of what those features are, then the item has to get a top rating.
