I think these ideas are "crazy bad". No other social network has these kinds of limits so if you're trying to get people onto Steemit and to stay on Steemit then how do you benefit Steemit by having barriers to entry? 4 blog post per day is just too low.

Suppose Alice is doing a lifestream and wants to send a small video clip of every hour of her life? When you limit her to 4 posts per day then you force her to make much longer posts to compensate for this artificial scarcity. It doesn't actually help because now instead of us having a clean sequence per hour for 24/hrs we get a couple of 6 hour posts?

This will make people make longer posts which are less likely to be noticed, read, etc. If the point is to grow Steem then we want as many posts as possible. A post which our little group doesn't seem to think is valuable today could become valuable in a year or two because we don't have the time to evaluate every little post but this does not mean we shouldn't accept them.

Attention is always going to be scarce. If attention is always scarce then you don't really gain very much by trying to shrink the amount of posts down to the amount of attention. In my opinion because the amount of attention will grow over time we should accept as many posts as possible unless it starts to slow down the system which I highly doubt will ever happen due to the design of Graphene.

To put this into context, does Reddit have a cap? If Reddit has a cap then that same cap would work for Steemit, but I do not think Steem (underlying Steemit) should have any cap. Meaning you can say a person can post as much as they want but Steemit will only display up to a maximum. But I don't think we should put the maximum at the protocol or underlying Steem level or we will end up having similar debates as the max block size debate in the future and for what gain do we get from it?

Content quality is important but so is content diversity. You lose diversity by a 4 blog post per day limit, 16 reply post per day is insanely limiting. You can reply unlimited on Bitcointalk if you want to take the time to make unlimited replies but the limit is the amount of time you have in a day. Content quality in my opinion isn't the problem but discovery of quality content is the problem and we can solve that with a better UI.