Do see merit in the SDP's proposal but similarly, I have concern over those who had opted for NOM and subsequently lagged behind due to their non-appreciating HDB. I agree that HDB should never be an investment tool but I do see the advantage of it being appreciative. I am sure all would want to see the value of their HDB appreciated, whether they have the intention to sell now or later.
I can only cite a real life scenario.
I grew up in a modest HDB 3-room flat (meaning only 2 bedrooms). When my brother got married, he moved out on his own by applying for his own HDB flat. Few years ago, due to childcare issue as his kids are under the care of my parents, he decided to get a bigger unit to stay together with my parents. He sold his flat and my parents sold theirs too and combining the profits, he was able to get a bigger resale unit with 4 bedrooms near my parents' place with a substantial downpayment and cope reasonably well with the loan installments.
In an hypothetical scenario, If I am to apply NOM concept, can my brother benefit if he had opt for NOM and my parents did as well. both their units will be sold back to HDB at cost and they will not be able to get any profit to be able to afford the bigger unit unless they can find one NOM from HDB.
My brother has made the move due to family requirement and not to flip his flat for profit. The appreciation of his and my parents' flat made it possible for him to keep pace with the rising price of the unit in my parents' estate. If under NOM, would all this be possible?