First, I can`t tell if cyberbugfixaga reduces chip ram usage vs. fblit + other patches because of the hits.
About MuForce hits. It is a part of MMULib archive (aminet) and a replacement for enforcer (debugging tool). Guide qoute: "MuForce watches illegal memory accesses and reports them over the serial port or any other output stream."
Debugging tools are mainly for developers but also for users if they want to test new/old software. If you notice enforcer hits it is always good to send it with a bugreport to the author (helps fixing bugs). For detailed info read the dokumentation and maybe learn programming.
The most chip ram you can get with the hack fscreen but I won`t recommend it.