I checked on the Bombardier website, you're correct concerning the 8 firm orders for the 900 Next Gen with 6 options. Off to SAS services once delivered. A few customers dealing with BBD at present for CS100s and 300s. I have to speculate there are sure to be more C series sales in the weeks ahead despite competition with cheaper airframes on offer but I highly doubt predictions that this aircraft is a loser is anywhere near the mark.
Prospective buyers are likely to come and go and for sure some will walk away, but the ones who buy will be the winners. The reference "game changer" is being thrown round like leaves in the wind. The C Series IS a game changer and when we begin to witness the legacy carriers reclaiming the flying they gave away to the Regionals in the mid 80s by buying this aeroplane, only then will we begin to understand the concept of game changer.
Willie