As I understand it, the problem of short(ish) runway length for RYR at ABZ isn't only down to the engines...it's also a brake cooling issue due to the short turn around time. The brakes won't cool enough to allow a safe stop at MTOW in the event of a high speed abort. Not sure if this becomes less of a factor if your engines are more powerful (RYR using CFM56-7B24s compared to -7B26s or -27s used by the IT operators as mentioned by Stampe).
One way around it is to restrict the payload of course...
