Tier 1 Primary stat at max Rank (15) = 1.88% boost (Different Primary, different stats)
Tier 2 Primary stat at max Rank (15) = 2.00% boost (Different Primary, different stats)
- Primarys attributes have fixed values
- Secondarys have lower random values
Based on this type of system you could
Potentially boost a hero to a great degree but it could take a long time to find/make "perfect" mods.
Mods Set Bonuses
You have 2 set and 4 set bonuses.
Example, SPEED has a 4 set bonus, so having 6 speed mods lowers your maximization.
-but- Potentialy you could go with say 3x2 set bonuses such as CRIT.
So 3x CRIT set bonuses would increase base CRITICAL chance by 15% (3x5%)
It would be best to for example go with a 4 set bonus from SPEED and then use a 2 set bonus such as CRITICAL chance to give you that extra set bonus, unless you want to run with 3x2 set bonuses.
Best would be to use Mods that compliment the Hero being moded to compliment the team you are building and also considering Leader Boosts, want a super high health Jedi team or a high speed Night Sister team?
To make a Jedi high health team the leader must be Barriss Offee
To make a Night Sister speed team the leader must be Asajj Ventress
These are just some examples, anyway i hope this MOD explanation helped.