This would be massively insecure. A single person could create a ton of duplicate accounts, seed each with the minimum amount to stake once per day, and dominate the network weight. The whales could do nothing about it if they're only allowed to stake once per day. The point of PoR or PoS is to make it extremely expensive to attack the blockchain; a staking limit undermines the ability of either to do so.
I think a common thread in this post and others is that (at least when it comes to network security) it would be wise not to stray too far from the tried-and-true methods.
You are right, i just hadnt thought about that. But anyway some compesation that isnt too insecure would be nice . (anything that has the effect of only needing a 33% of the stake weight instead of the 51% would be ok to me) Even 10% should be safe considering the actual sell supply.