I feel like I'm playing a generic one-level upgrade-until-you win. Would like some diversity in weapons and vehicles. Most of the weapons all feel the same.
Also, maybe reduce the lagginess. Cut some of the unneccesary moving bits.
Autohotkey is a pretty common software that automates this stuff. None of the events are that hard to cheat.
Also, for gods' sake, they are not hacking anything. No security was breached. They just know how to optimize input.
Generally it's better to give more leeway with the timing window than less. The concept is great, no doubt, but the timing makes this game go from zen to fury. Relaxed mode would help a lot more if slowing the blocks down didn't also tighten the timing window even further.