Even when I have available 33 BTCs, I will not use them for investing into one NEM supernode.
The cost is too expensive and it's very risky to invest a huge money into only one supernode, and one altcoin.
I will use 33 BTCs to invest into different coins, not only NEM.
Yes of course. Only a nutter would do that. It's more for early adopters. There are enough of them so there's been no move to reduce the required amount of coins. That may change if numbers fall away.