VOR Approach - Can you alter it?

The VOR 16 approach to KEST is about 8deg off from the actual runway
heading. It feels like a lot more than this when you are 3 miles
out. I flew the approach and with the ground covered in snow, the
runway covered in snow, daylight, blowing snow (almost a ground
blizzard) so no airport lights, the runway was very difficult to see.
Without the handheld GPS telling me exactly where it was, it would
have been easy to have been too close to the airport by the time it
was seen to make a zig zap adjustment and a normal landing. A missed
approach for no reason.

Why not adjust the VOR approach to be 160 deg inbound instead of 156
deg?
There are no obsticals in the area. Why not fly outbound on 340 and
inbound on 160? This way one would be lined up with the runway and
the PAPI lights may help visibly locate the runway.