Oh, I realize that. No one ever accused IL construction of being done all at once. We already know its spread out over years.
As far as Metra: Metra needs less long trains, more frequency, less stops for some of the more frequent trains. If one is going downtown from the burbs, at rush hour, then Metra is a viable option. If one is going downtown from the burbs, at any other time, as long as you have time to waste, Metra is a viable option. Of course, with this option, you get to sit with people who can't cover their nose/mouth when they sneeze/cough, get to be crammed in with someone because the seats don't have enough spacing (unless you are smaller, and have a smaller neighbor next to you), get to make sure you're at the station at least 5 minutes in advance (on Metra's schedule) so as to make sure the conductor doesn't leave early (while sometimes looking at the people coming up the stairs and onto the platform as the train sits there, and then does nothing, as the train pulls away 10-15 seconds later), etc. etc.
Metra is about balance really...balancing using Metra, vs. your own car + spending more money.