The real problem here is that when you reduce some of your stat points you can become exellent at all other things you want.
If something makes you distribute special points in wider area it would balance things out.
Everyone propably knows this but just to wanted to crystalize the problem into 2 sentences. Lets continue from here?
Here is some thoughts about the fix. Need some helps finding flaws and exploits. 2 or more heads is always better than one.
You have to understand that these are only experimental suggestions and no way something I think is balanced, so rather than saying it totally blows don't comment at all if you have nothing to make it better. We all know it is not perfect, no need to repeat that.
[STR 6 gives 1ap bonus move [STR 8 -1 on attack APcost]
[Give STR stat similiar HP gain effect like Endurance has on each level up but a bit smaller.]
Why? Becose doesn't matter how agile you are if you lack strenght you can't move fast. -1 to APcost at STR10 becouse the guy is strenghty that getting a gun like big gun into shooting condition takes less time.
[AG, all points in AG over 8 give only bonus ap to movement, AG10 -1 to attack APcost]
Why? Becouse Making you more agile don't give you any more time to shoot with your weapon. Time and distance doesn't change becouse your guns RoF determines how many times you can shoot when standing still.
[EN 8 gives you 1ap bonus move, EN 10 gives you 1 bonus move]
You also need endurance to move fast
[IN 6 gives you 1 AP]
Becouse to use time and distance travelling you need to be somehow intelligent to realize things and be able to learn from your mistakes
Other SPECIALS could have similiar perk like bonus abilities. When SPECIAL effects only in one thing it's easy to decide where to put points.
But When bonuses are distributed all over he SPECIALS you really need to think what to get. For example you cant be insanely fast moving, fast shooting, TANK.
This is only a rough example as I stated above, deciding what SPECIALS give what bonuses should be faithful to "fluff" and also something
that wouldn't break the rules to hard. This is already breaking the character creation but If left as it is there is really nothing to make
things better.
The idea could be also something totally different, but still related to specials.