With my trail bike, I have had the suspension lowered 2" and fitted a Seat Concepts comfort seat, I also have body armour which has a padded bum too hahaha
My Moto Guzzi has a custom seat too, but it isn't any more or less comfortable than stock. The Triumph seat is standard,but I did get the low ride height version which helps moving the bike around.
As for kit, I have various bits, Rukka textiles for winter/rain, which are pretty comfortable. My leathers are comfy, but too hot in summer so I mainly only wear them for hooning or trackdays. I have some biking jeans, which I like, but again are black, next time I get a pair I'll get blue ones as they will be a bit nicer in the heat.
I've never had a bike with heated grips... I probably should get some, but never get around to it.
My next bike will have cruise control and heated grips I think fitted from the factory.