First of all stop looking at other armies and how good/bad they are having because reading dark eldar codex will make you have a stroke. Second ork boyz are 7 points now for (for 4 attack s4 hitting on 2s blenders lole)
Now that that's out of the way, let's look at what we have as CSM and that is access to cheap backfield objective holders that are cultists. Same as point values and rules change we have to change tactics. Look at alliances with other legions for their troops, daemons, etc. If you were a faggot running 150 cultists then you knew what you were doing. I was running 1 squad of 40 and two of 10. Now/after fall faq it is not viable... except in thousand sons!
So be flexible, chaotic and look at other options. Not gonna spoonfeed further, but it is time to move forward on the stages of grief.