Is this a serious thread? Even without PS, Kakashi was able to defend himself against Kaguya, wound her 1 vs 1 and stop her counterattack. And Kaguya is like 943835748347835784784783427 times more powerful than EMS Madara, who was defeated by Hashirama, who admitted he was below first form Juubito, who is below controlled Juubito, who is below Juudara, who is below full power Juudara, who is below Kaguya, who DMS Rikudo Kakashi could hold his own very well against, even without PS. By this reasoning alone Kakashi negs.
Perfect Susanoo restricted or not, Madara can't evade long range Kamui when Kakashi's usage of the jutsu outspeeded Kaguya's S/T that was too fast for Rinnegan Sasuke and nearly too fast for RSM Naruto. Kakashi can also teleport behind Madara with both MS + Rikudo chakra maximinzing the speed, and then Kamui GG him. Or just create a giant Kamui warp taking out Kyuubi's head and Madara and call it a day.
Not to mention Kamui Raikiri that struck Kaguya defenseless, when Kaguya is times and times and times faster than EMS Madara. Madara can't even dream to damage Kakashi due to Kamui phasing also. Not to mention Rikudo chakra enhancing Kakashi's various jutsu.
There is an abyss between DMS Rikudo Kakashi and EMS Madara, so wide that restricting Perfect Susanoo for Kakashi doesn't change things at all.