You have to ask yourself though: how would that benefit GO from an operational and safety perspective, and would it be a good use of money that could otherwise go into improving or expanding service on the GO network.
To me I see absolutely no benefit in retrofitting the newer rounder cab cars to look like the older ones (it’s probably not even possible, it’s not a modular design). In fact you’d actively be removing safety features like the improved visibility the newer style of cabs offer for the operating crew, and the CEM features (because you can’t add CEM safety features to the old cabs).
I know there’s a lot of train foamers in this thread, and that’s fine because this is a thread literally dedicated to GO’s equipment; but this is just a crazy and extremely unrealistic idea.