Personally I wouldn't support such kind of schemes to distribute coins because it appears that it would only be centralized and to know that "uneven" distribution really is uneven since a few people holds majority of the coins since the start and these type of schemes are only beneficial to those in the higher levels and not really on the people at the lower levels.
Centralized meaning here is to keep prices stable, they will take action if price down. If there are no such systems will only be extinct very quickly in trade market. Some coins are still standing like dash and edr. MLM (which is not ponzi) have the power to form a strong chain, where active players get reward more active than passive chain, it is good to maintain stability than no system at all, there's no element of scam when using earning system more than 1
