I know such problems - I'm also self-employed and love my cash-cows :-)
But the Kenney Studio NXT (KSN) project is young and you could e.g. switch to Unity3d (C#, Javascript) or any other multi plattform IDE. I believe there are many capable C (C#) and Javascript developer which could support the project.
The templates for KSN could you sell as IAP, e.g. Alien Pack for 99 Cent. You could offer it als Unity3D Plugin or as iPhone, iPad, ... app. AdobeAir and AdobeFlash die or are not supported (e.g. iPhone, iPad).
Regards