Machamp kinda has to get double strike, so maybe they should get a combat ability to go with it? Saboteur triggers simultaneously do and do not seem appropriate for fighting types--what do you think? Alternatively, it could just be an on-attack trigger. If you're including treasure tokens, they seem like a good candidate for things to get on dealing damage to a player, symbolizing how these three are essentially prizewinning bodybuilders.
The OG pokedex entries state that Machop can throw a hundred adults a great distance all at once like some kind of disturbingly amorphous railgun, Machoke wears a power-limiting belt, and Machamp can punch real good, so I see your problem with trying to make cards of these. But when in doubt, you can make them your keyword soup mons with like haste, vigilance, trample, etc.
