Have you been on one of the E175? It's like a mini Airbus except no middle seat. People really like them. They can stand up in them, not have some fat guy/gal in the middle seat, put their bag up in the overhead for the most part, the engines are under the wings making them look similar to the rest of our fleet. And larger model would be more than welcome IMO. The CRJs are definitely not comfortable, but the CS series looks to change that entirely.

On time is almost entirely a metric on the regional operators, the fact there is a smaller number of customers to disrupt (that's why you see weather events cancel UAX at a much higher percentage than mainline), and the fact it doesn't hurt mainline performance numbers.

I'm all for any airplane be it new or used showing up at mainline. It is a win for all of us.