No doubt that many things will change with the actual EAs. Some projects will be surprisingly expense, others will be dropped or reduced in scope.
The really exciting part is the committed non-revokable funding pool. If $29B in 30 year green bonds are issued and tied to public transit expenditures before an election takes place, they'll be damn difficult to get rid of. A future government could cancel the DRL and instead build high-speed rail to Peterborough but we know that money will be going into a transit project somewhere.
GO investments tend to be good ones. I could see the conservatives following through on those, though perhaps only 30 minute frequencies instead of 15 minute.
If, as usual you get half of what is promised, this is still going to be interesting.