Decreasing compatiblitiy of OS4 a good thing?

@LiveForIt

For security and stability reasons system components need to be protected much more than now. Currently you can easily overwrite system components like libraries with a bad written installer. So a modernized OS would also need mechanism to secure the system. -Also you would have different software running in system without affecting each other like 68k programs, 32bit and 64bit software, running in different environments without directly affecting each other. The central instance would be exec as kernel propably, and different sandboxes running upon it. The kernel also would need to detect the hardware and manage the different cores and what process is started where. So there must be a tight integration between kernel and the environments running on it. How that works in context of OS4 with different teams and ownerships I do not know. Normally all is i one hand.