Bigger dumps are less painful than death by a thousand cuts (as is currently happens).
At least this way, whales that are disenchanted with the platform can put up (sell) or shut up. Rather than feeling trapped. Also I suspect many were powering down feeling they had nothing to lose (as inflation meant they had more STEEM in their accounts regardless if they powered down or not).
These proposals also gives those that may be interested in investing in the platform a chance to establish a good foothold, rather than be put off by the current perpetual dumping.
I liked the sentiment behind people having to hold STEEM long term to accrue the real benefits however the current crypto landscape is dominated by short term speculators (or at least people that want the option to cut and run should they need to). These proposals seem like a pragmatic compromise.