they can try to minmax, but at least now you can't minmax with just 1-2 stats. Everything has drawbacks for being low
No health? No need to explain why this is bad
No mana? Having mana is so useful that not having any left is very disadvantageous
No Speed? get hit lots
No Skill? Don't hit shit
No Mag? Your powers will be weaksauce
No Strength? Your attacks will be weaksauce - and when mana runs out....
No Defence? Take tons of damage.
No Resistance? Also take tons of damage.
No Mind? Well, I guess this one is a bit less important, yes
as it is now?
No Strength? You deal d50 damage anyway, Str is just a small bonus
No Mag? Bitch, you can basicaly choose wether your powers take mag or mind during char creation anyway, pick your fill.
No Mind? Well, you get your powers from mag then, and since you can just dodge fireballs with dex just fine...
No Endurance? Dex will handle it.
No dex? You are fucked
with the old system you just need *one* stat to be effective, it covers all bases, and the d50 covers all others.
with the new system, without the dice, there is no singular stat that can keep you safe and effective at the same time. People can still try to minmax, no system is safe from players who intend to exploit it - but it is a lot harder to do so with this system.
Anyway, minmax is really not the point, the point is that in the current system, the stat-numbers, the dice, and the size of mana and healthpool are all set in arbitrary sizes, none set with the other in mind. It's unbalanced. to a degree where stuff like Luthar taking 50 turns to kill is easily done.