Seats fit everyone differently. I may like one that you hate. I'd recommend riding it for a while. The bike feels lower the more you ride it.
As for the exhaust, I don't like it loud. Peace and quite is valued by me. You could always follow a Harley and get your "noise fix". If it made a noticeable improvement in power, that would be different. The only reason I see for noise is to chase off the deer. A perfectly quite bike, like an electric one, would be nice. I'd own one.
“Take the risk of thinking for yourself , much more happiness , truth, beauty, and wisdom will come to you that way.” Hitchens