The angle of where the lower vents sit is just perfect by me.....even if you have a lot of ash, it will generally fall thru with no prodding.....this is last nite.....
Personal preference for low heat.....I sometimes have a hard time pinching down the One Touch just right & they allow air to enter higher up in the kettle.......makes a difference, just an opinion./.....
Cleaning is a bit harder, but just a scoop (I use plastic garden hand shovel) & maybe a brush....