I don't think they will drop the ILL$ with the new rides coming, it will make too much money. And $25 is nowhere near expensive enough to decrease the number of people buying. If it included all the rides, or even as is, people will still pay it to skip the line (even more will buy it if there are no ILL$) so it will just make availability even worse.
Adding the extra rides is good to open up some more inventory for what will likely be a very busy spring and summer.
I would hope this is disney responding to all of the criticism and complaints about how crappy G+ is and trying to make it a little more useful. While they want to nickel and dime us to death, they still need people to keep coming to the parks, especially with Universal breathing down their necks in the next few years.