The new changes are really really good!!!

Minimum reputation of 50
is not a bad thing at all imo. It has much advantages and people who post good memes will also get some upvotes which will result in good reputation. The thing is, that new steemit-users should also be active on steemit to reach the reputation of 50 as fast as possible, but with dmania, steem, supporters and the users growing there will also be more upvotes.
The higher gini-simpson-index also forces it. Fine for me

The best thing is, that upvoted memes and memes that are too old do not count. People can not abuse the system in that way and also have to be more active, which will result in higher rewards and upvotes.

Really like the updates and will be the next big step of improvement in the right direction for dmania!