Yes, if you're having trouble with options activating when you don't want, make sure that you don't have any game functions linked to the trainer's keys.
And as far as no one wanting super speed in any game, I think this is pure opinion on your part. The super speed is nice for getting vehicles to a location quickly, esp if your units are under attack and you need immediate support. I use it all the time. I also use slow motion so that I have more time to build up a base before the enemy attacks. Not everyone wants to turn on every cheat on every game. We try and put in as many options as possible so that everyone can cheat the way THEY want to.
Vehicles? Try Motherships, the scrin mothership is awefully slow, but crosses the map in seconds with the option activated, pretty funny