The MA 60 had a 'up market' version called MA 600, which touted better performance and reliability .. and still nobody wanted it, even when China offer 'buy two, get one free deals'.
By the way, a famous operator of the MA 60 managed to 'under shoot' the runway once and 'overshoot' the runway the next time, and blaming the runway for the error. And for every plane that was shot on the runway, they got one replacement FOC. Now that is the kind of killer deals we need in Paradise.
Come to think of it, Paradisians' are more intelligent that Uncle Bob (Mugabe) and we know a think or two about technology, and Robert Mugabe is mad to ground the MA 60
My take would be, MA 60 is a politicallly appeasing deal, with no % involved, just to make China happy, and help Chinese aviation manufacturers chalk up some sales, even though it could end up hurting the safety standards of Sri Lanka as a whole, when we fly uncertified aircraft (errr ... does FAA/JAA certification really that critical ???)