There is a definite gap in the market between the 19 seat and 70 seat classes. This is not a large market sector but the existing contenders are getting old so there should be a replacement market for several hundred over the next decade.
A credible contender should be capable of short field operation while offering low operating costs and good comfort for between 30 and 50 passengers.
Nobody wants to operate 40 seat jets nowadays, their high fuel costs make them too expensive to operate.
This is a niche market but it could be a nice profitable niche for the company that can get it right.