Absolutely.

I want to race around Sanctuary like my horse was powered by fire of Diablo itself, instead every time I try to turn my horse has to slow down, and take a moment to inspect some random demon's armpit.

Force Move should be 100% speed when mounted

I like that you can go different speeds. However on a controller you don’t need to move your finger much to get full throttle. Is the variable speed zone with mouse really that big? That would annoy me as well, halfway between horse and edge of screen would be good to go full tilt already.

It's probably the wrong "port" from controllers. But why it's not the same when walking on foot... Who knows?

Not to mention getting stopped by any random piece of terrain or turn, or anything really.

Yeah, its a bunch of issues that compound to make the horse kind of a pain in the ass to use:

1. 3 tier horse stamina mechanic is dumb.

2. Toolbar HUD is way too big on certain screens and there's no way to configure it, which means it interferes with horse travel and teleportation. Only thing you can do is move the toolbar to the left corner, which sorta helps.

3. Bumping into a wall or barricade doesn't stop the drainage of horse stamina.

What I really want is:

1. One long stamina bar that drains at different rates depending on the horse's speed.

2. Have the horse speed mouse diameter be between the top of the screen and the top of the toolbar.

3. Horse stamina stops draining when it runs into a wall.