My point is that it will bring casual cheating to the "tournament". Currently, it's either "cheat very hard or just get 1k MPG", you are right.
But with these new things, it's now "cheat very hard or cheat a bit to secure your pack".
I didn't read it like that at first glance, you are probably right. Tournament cards will probably be available in Platinium packs.
So... if that's true, people will definitly want to secure their Platinium pack by win-trading, at least to have enough points to get it.