Hi Nana,
Thanks to the Related Topics widget at the bottom of this post, I can see that you discussed a version of this topic just a few months ago: Delegation Saturation for DReps?
Based on the conversation and poll results, it looks like a consensus was reached that 50 million ADA would be an acceptable saturation point for DReps’ voting power, with no cap desired on the actual number of possible DReps. It would have been great to have seen more community interaction in that discussion. 
I would love to get some momentum behind this idea with the intention of turning it into an official CIP.
Do you know of any obstacle that may make this goal difficult/impossible to achieve now that we have officially crossed the Plomin Hardfork stage? Are you aware of any specific actions that are being taken to advance the idea of a DRep saturation point since the topic was posted back in October?