[ ... ] People using coolOS come to OpenBSD because it is more secure. Then they demand OpenBSD to implement same features like coolOS. They even expect OpenBSD to be configured like coolOS.
For the OP: OpenBSD is more secure not because it is called OpenBSD! It is so because they way it is designed and configured! Change that and you will move it to your coolOS. If you want PF, go back and read about it. Learn to handle it in the way it was designed, don't try to blend it to whatever you used before. It useless if you do that. Thanks.