I actually played Tribes Ascend extensively (700+ hours), and while there certainly were botters and cheaters, actually running into one was rare. The most I ever saw was someone "lag-botting," which may not have been intentional. Intentional lag-botting is when someone induces high ping/latency in their connection, which causes their model (and more importantly, their hitbox) to jitter, rubber-band, and lag, so that they become much harder to hit. I saw several videos made by aimbotters, though.
My point being it's not necessarily going to MEGAKILL POWERNUKE THE ENTIRE GAME if a small portion of players cheat.
And I played for
956 hours.
I've encountered numerous cheaters, the most prominent one being the guy called "|||||||||||||||||", also known as "barcode" who regularly joins West servers and skews the game toward whichever team he's on. He's used player-teleporting hacks before, as well as INF detection, but now he's just using some kind of aimbot combined with hitbox reduction.
There's also an aimbot floating around used by player "Rielelela" or similar, which works very well for close-up plasma shots.
There are a number of documented people using energy hack where they can stay in the air indefinitely.
There's another guy that randomly joins a server under varying names and messes with its memory, thus everyone randomly teleports into the sky.
There are also "accepted" hacks like Nova Colt and Eagle Pistol continuous fire and lag reduction ones.
Unlike a better thought-out game with solid netcode and some cheat detection (Quake Wars), these cheaters can absolutely wreck the matches. In Quake Wars it was much more difficult to win with just an aimbot, because there was a deep strategy layer and the cheater got killed off one way or another.
In Tribes there's much derp and an aimbotter is god. A similar story is going to happen with instahit lasers of Elite: Dangerous if there's no server authentication of player actions, no Punkbuster or anything of the sort.
This story happens again and again. If it CAN be hacked, and it is reasonably popular, it WILL be hacked. Back in 2004 I left a UT2004 clan I cofounded after people started appearing in our instagib games, spawn in any faraway corner of the map, and instantly turn it into a graveyard.
Cheaters are the Ebola of online games.