Maybe there should be a mention in the builds that they are planned against for example street scums or archetype characters. In our table a typical enemy is an archetype character, so we need to plan characters to fit in this setup. If you slightly optimize your character, it's possible to almost always win archetype characters because your dice pools are higher. But if your build is as powerful as archetype characters (measured by dice pools), you have severe difficulties to win them constantly. But it's indeed possible to play like that, if for example the enemies are street scums.
It's possible to use team work tests to get better results. But how often can you really use this strategy? The very basic build in this forum has always:
Combat skills (shooting/spellcasting)
Stealth skills
Perception
Social skills
(Other skills)
I think that if you shoot with an assault rifle you cannot use teamwork tests. If you try to hear something difficult (4 hits needed), it does not really help if even 4 runners are listening, each with 6 dices in their perception pool. Yes, the gm can reduce the needed number of hits (3 or even 2 hits needed), but if the runners try to notice a gunslinger adept archetype character from the corebook, the threshold is on average 4. The adept has 12 dices in his sneaking pool, even more if he used agility attribute boost (10 dices ability).
If you look at the list above, I think that only social and sometimes the other skills (depending on skills) can benefit from teamwork tests. But the problem is that if you try to build a character which is enough powerful against archetype characters, you have sometimes used almost all your resources when you create characters with 12-16 dices in their combat, perception and stealth dice pools (no teamwork benefits). And after some social skills (etiquette, con) and athletics skills there is nothing left in your skill points. Ok, I have because I prefer higher skill priorities (B or even A), but many here think that you have to had at least 2, preferably 3 in all atributes, which means that you need at least B to your attributes. This means that B in skills is seldom possible. And with C in skills you can create 4 skills with 6 and specialization, which are sneaking, perception and 2 combat skills. There's not anymore room for teamwork skills. And I see here many builds with D or even E in the skills...