We will add Litecoin and Perfect Money, some new types of mines will also be added. After halving the Bitcoin reward for a block ore-mine's monthly interest will be reduced.
You mean the 2. something % interest will further be reduced? Interest rate is already low, I hope it's not 50% cut from the current interest rate.
I think that 2.32% is a really high interest, because it is compounding.
But in comparing with mines, of course, it is not so high.
In case of mines you cannot withdraw your money instantly and need to wait for the income.
While investing in mines you have an income about 10 (!) times higher, than in case of interest.
We cannot provide an unlimited amount of income and all mines will be sold soon. But now mines are still available and you can buy some.