The problem is, that despite some features being changed the main idea stays the same: A centralised blockchain with a HEAVY benefit to early adoptors as well as a pyramid scheme built in.
So basically what people keep criticising is not a certain technical thing anymore - it is the overall idea.
The block chain isn't centralized in MicroCash, you may need to refine what you mean by the comment.
A pyramid scheme built in sounds interesting... so Bitcoins pyramid block rewards (half the bitcoins block are worth 50 BTC, then half of that worth 25 BTC, then half of that worth 12.5BTC and on and on) aren't a pyramid but I guess having account fees go to every MicroCash user is a pyramid.....
There are way more "early adopters" in MicroCash than Bitcoin. How many people mined Bitcoins first 2 million coins? SolidCoin probably has 100-200x more investors at the same stage. So pretty much all your criticisms here apply to Bitcoin as well but amplified. Are you suggesting Bitcoin needs to improve its overall idea?