The main thing for me is that government would not put the tax which will be depending on earnings and be represented by percents, so basically 60% of your income would go to government, or even more.
I think that it is to much but of course tax will be one of the things that goverment will do to make crypto possible to use in their country, that will be one of the regulations which will be made in near future for me.
60% or more of the income made by investors from crypto as a tax do very huge. Indirectly, the governments are already taking taxes from every crypto user when you finally convert cryptocurrency to fiat. Tax is good because it serves as the largest means to raise funds to develop a country but 60% of income going as tax is weird.