As for the Kick votes they were changed to AP due to people abusing them. People deliberately kept kicking the AP users, or the ace from the game, so it was changed. As they can only be purchased with AP they wont be abused much now. People will not waste the kick votes as they would be wasting their own AP.
Do you not think that if kick votes were free as you are suggesting then the hackers themselves can abuse them by kicking everyone from the room they dislike.
Under the current kick vote system (AP), the majority of the votes get wasted as players don't vote fairly, they vote to keep the hackers in the game to benefit themselves in-order to win. Also some players vote no out of spite simply because a GS' is attempting to kick the hackers, which doesn't make sense but it does happen.
The current kick vote item can only kick players from the same team, I'm sure the other GS' can back me up on this, but when a hacker/glitcher is in the same room all the players start saying ''GS please kick the hacker/glitcher'' but because they are on the opposing side, there's nothing we can do.