As it stands most players get certs so that they are effective against infntry armour and air units. And chaging their current loadout is only an AMS or equip panel away.
What if some certifications prevented you from getting other certifications.
For example all certifications become 1 of 4 classes (not incl armours and some generic certs woudl remain avaible to all like AMS)
Anti-Inf (e.g. sniper, heavy assult)
Anti-Vehicle (e.g. lancer, Vanguard [vehc] )
Anti-Air (e.g Air MAX , sky guard [vehc] )
Support Systems (hacking, medical)
once you take certs in one class you cant take certs from any of the other 3 classes. Thus your roel becomes a specilised one making u an expert in one of the 4 classes.
Of course downside to this it that many cert combinations that people current like will not be possible.
But hey its just an idea,
its has some good sides and some bad sides.
probably the kind of thing that would be fun for a week or two and then get changed back due to the excessive whinning