I guess I didn't really consider the non-RER trains that will still be there making all stops, so that probably solves that one. Still though, in relation to the RER service model, wouldn't this newer concept of Local/Express (as opposed to the original concept of all-stop milk run) effectively cut promised services in half. Even for stations on lines that converge. So Local stations like Ellesmere on a single line go from 15min to 30min, Local stations sharing two lines like Gerrard go from 7.5min to 15min. And only the Express stations get the originally-promised service frequency?