This is just to get a feel for the altcoin communities feelings in this issue as it is being discussed in various coins at the moment.
Feel free to post a more detailed answer or suggest more / better options and I'll add them.
I think this is a good idea but not many devs do it as you can see, they seem to like the raising the supply threw POS.
One coin which i know is reducing supply in future is XCP / counterparty and they are introducing smartcontracts that cost XCP each time a contract is made, there is no more xcp to be mined so this coin will become extremely rare.
It is a fair way i guess as if you do not want to make a contract then you do not pay for one, those who do not still benefit from others who will and the reduce in supply should mean the value rising.