I am curious to know what their costs are on the E35/45 vs the E70. It would make sense from a customer perspective to standardize on E70/90, A319/320, and then CSeries where each aircraft is roomy and has some sort of IFE.

The other question is what does the ownership look like for the E35/45. With regional flying decreasing do they have a ton of planes they would otherwise have parked?

Finally, if the plan is to make the E70 their smallest frame, can they fill it with some of the SCASD routes they have been interested in recently? Does MKE-RHI make sense on an E70? On the other hand it would probably be the most comfortable plane to fly into many of these smaller airports and may be preferred for locals. People might associate Frontier with comfy planes and choose them over the competition.