There is no such thing as an ideal race track. Circuits are bound by the iron laws of reality: Grand Prix level tracks have to fit a given distance (between 3.5km and 10km) of track into the available space, in a layout which will allow powerful vehicles to stretch their legs.
They have to be somewhere where noise is not an issue, either as a result of being isolated from the general population, next to another source of noise such as an airport, or situated near a willing and enthusiastic town or city.
They need to have space for the fleet of trucks which transport the paddock from circuit to circuit, and they have to be accessible to those trucks via roads wide enough to let them pass.
Last but not least, they have to provide an attractive setting which fans want to visit, and good viewing over as much of the track as possible.
All these things militate against the existence of the ideal circuit. Find a space which is away from hostile neighbors, and it may be too small to create anything other than a tight, contorted track layout unsuitable for MotoGP bikes.
Or it may be on a hilltop, with few natural viewing opportunities. Or it may be too far from large population centers to make it easily accessible for fans, or lack the space for a usable paddock layout.
Yet something approaching the ideal circuit truly exists. A track where the bikes can use all of the 270+hp at their disposal.
A track which challenges every aspect of the rider, from managing their reactions at 360 km/h, to braking late and entering corners hard, to sweeping through fast combinations of turns carrying as much speed as you dare without washing out the front or having the rear come round and bite you.
A track with a roomy paddock, near a major highway, and several large population centers. In a country full of bike-mad fans. Set in a valley among some of the most enchanting scenery on the planet.
Oh yes, and the food in the paddock restaurant is some of the best you will eat all season.