Actually, that's not a bad idea, and in fact TriMet (along with SMART and Cherriots) could go a step further:
1. Create a Portland-Salem express bus, likely by using RAZ Transportation or another company that has intercity (Greyhound like) buses. This new bus route would take the place of the current 1X and 2X Smart/Cherriots buses AND TriMet's 96, and provide service from Salem to Wilsonville, as well as Tualatin (the Park & Ride, not the WES station) and Barbur Boulevard TC and the Portland Transit Mall.) In addition, Woodburn would also participate and get a stop.
(This route would be contracted out for several reasons: 1. It crosses through three different transit agency jurisdictions. 2. WES is contracted out. 3. None of the agencies have a suitable vehicle for the route.)
2. TriMet would then institute a 76E route during rush hours from Tualatin to Beaverton. The 76E would only stop at Beaverton TC, Nimbus, Washington Square, Tigard TC, Tualatin P&R, Tualatin City Hall and Meridian Park Hospital. (This bus would essentially replace the 96, along with a new local Tualatin route that would provide local, all-day service from the Tualatin P&R along Boones Ferry Road, and another route that would provide west-east service between Tualatin and Sherwood.)