Not any more. The 100 point minimum was mentioned. It was also a maximum of 400 points per day based on minimum point segments. I got to Select and Select Plus primarily on the basis of minimum point segments. When I bought 10-ride tickets, I was getting maybe 224 points for that $112. 10 rides with half of them split up yielded me 1500 points, and often I'd just find a discount code.
I never saw any $1 fares, but I could force an extra segment by using multi-city. My fastest was once when I was just looking to get up to Select and booked RIC-EMY-SFC-EMY-RIC on a weekend 50% off special for $12 round trip. BKY-EMY-SFC-EMY-BKY would have been a little bit cheaper, but there's only about 2 minutes between Berkeley and Emeryville where a conductor might not meet up with the passenger. But the trip I had took less than 2.5 hours. If I missed the ride back I could have just taken the next one since it was unreserved.