Appearance is often the same as protection.
2" conduit will dissipate about 12.1 watts/ft.
16 #12s will produce 18.28 watts/ft.
1 #10 will produce 1.94 watts/ft.
1 #6 will produce 2.66 watts/ft.
It looks bad to me, but I don't know what the breaker size is.
