RE:stretch version of A220 and common cockpit
Dewar and Schulz also the A220 could be stretched further, along the lines of the CS500 project Bombardier envisioned earlier. But both stressed that a decision is not near and would have to come following a strategy review. A further stretch would potentially put the A220 in direct competition with the A320neo.
I certainly understand that the CS500 could be in direct competition to the A320neo. However, if the CS500 is a much better plane in terms of performance, then why not. Might be a good idea to terminate the development of the A320neo and focus on the CS500.
You can imagine the potential savings having the CS100, CS300, and CS500 having a high percentage of commun parts. In addition, training cost savings could be rather important if the cockpit for the tree models is exactly the same.