I see your point of view. What I see is that in 10 years, just by burn half rewards and burn taxes will lead (at writing time) to 1500 billion (1.5 trillion) lunc burned which means a total supply down to 5.3 trillion. Adding to this the other mesures taken to burn (if bigger burn taxes passes for example or any other validated proposals) yes it doesn’t seem to be a lot but all accumulated means a lot, still better than 77 years actually.
Now I say 50 percent for a good equity. But can be more or less depends.
If I calculate right: actually the price of lunc will never pass 0.001.
Just the burn taxe will reduce total supply of 870 billion in 10 years BUT you have to add about 300 billion of rewards back in the chain for taking, means in 10 years 570 billion burned with taxes.
With a half rewards burned for example, 570 billion plus 600 billion in 10 years = 1,17 trillion in 10 years.
Lowering faster the supply leads to a growth of the value, better value with less supply means a potential price in 10 years hitting 0.006 instead of a potential 0.001 with only burn taxes.
You understand that this is not taking consideration about any other things that can lead to a massive pump exceptionally like a tweet of Elon musk for dogecoin for example 
I’m only talking about numbers of potential growth of that token based on supply and price.
So even if officially it can hit that way 0.006, depending on events it could go higher or lower like we l’adresse know.
Now. Better have 10 million luncs in your portfolio making 6.5 percent apy rewards and at term hitting 0.006 or keeping your 15.2 percent apy and never pass a value of 0.001 for your 10 million coins?
Example in this scenario: 10 million luncs at 0.00017 you pay it 1700 usd, at 0.001 it’s worth 10.000 usd. With your 13.2 percent apy for 10 years = total luncs: 34 million = 34 000 usd in 10 years in that case
Second scenario: 10 million luncs bought at 1709 usd. At 0.006 it’s worth 60.000 usd plus your 6.5 percent rewards in 10 years 8.7 millions more total of 18.7 million luncs = 112 200 usd in 10 years in that case.
Here is the real reason why it is more interesting to sacrifice half rewards it’s because longterm you have much more gains.
And this is why educated investors would be more interesting by a lunc staking at 6.5 apy reward with 6.5 burned rewards. And so it will attract more staking « clients «
Only problem is the circulating supply, it will have to be reduced progressively as well but think it will people buy and sell all the time so don’t think it would be a problem but if it becomes one, changes in the mechanisms would be possible to adapte