Is the Alfa Romeo MiTo's DNA system full of gimmicks or is it actually useful?

In addition to all the above, the Alfa Romeo MiTo features a unique DNA (Dynamic, Normal, All-weather) system that lets you choose to alter almost anything the car does. One of the things they boast about is that this feature provides the MiTo with three distinct 'personalities' suited to different driving conditions. But then car enthusiasts themselves are debating about whether this system really improves the driving experience or it is just a way to market something. Some say it changes the car’s behaviour dramatically, while others say that the differences are barely perceptible. The conversation usually centers around how much the DNA system influences throttle response, steering feel, and all around handling in actual driving conditions. There’s also curiosity about how this system compares to similar features found on other cars and if it’s something that might be a selling point when looking at the MiTo.