The fee is $0.20 at most, a large, large majority of the time. Senders spend less, businesses receive more in value, everyone is happy. That's simple and it works well.
For replacing miners, bad idea. That's part of what backs Bitcoin and makes it better than fiat currencies; the computational power required. Systems that build on a quick network, like the lightning network, exist and are in development.
Seems like you're trying to fix something that doesn't need immediate fixing, or you're shilling. Development and changes come with time, when they make themselves necessary.
thats an american mindset of "$0.20 is ok" you do know 20cents is like 4 hours of minimum wage labour in a few developing countries.
and you wonder why developing countries are not storming into bitcoin.
yea 20 cents is only 1minute 36 seconds of american minimum wage ($7.50) but try to put your mind into the mindset of the 'unbanked' countries that will actually see/want real benefit of bitcoin
bangladesh 9 cents an hour Min wage: 20cents= 2hours 13minutes
congo 20cents a hour Min wage: 20cents= 1hour 0 minutes
cuba 5 cents an hour Min wage: 20cents= 4 hours 0 minutes
Eritrea 15cents an hour Min wage: 20cents= 1hour 20 minutes
Ethiopia 11cents an hour Min wage: 20cents=1 hour 50 minutes
Gambia 15cents an hour Min wage: 20cents= 1hour 20 minutes
Georgia 5 cents an hour Min wage: 20cents= 4 hours 0 minutes
Guinea-Bissau 18 cents an hour Min wage: 20cents= 1hours 7minutes
Kyrgyzstan 9 cents an hour Min wage: 20cents= 2hours 13minutes
screw it ill stop at K of the alphabet of countries on low income, you can research the rest
if you think in the mindset of developing countries and then translate it back to american...
would you pay between $7.50(1hr) to $30(4hr) to use bitcoin.. emphasis thinking about it from the minimum wage prospective