Stopped reading when I realized OP is 16 years old.

My mentality.

I wanna try EVERYTHING.

Well there are two ways to think of builds.

1 is weapon centric, what the weapon is will define its role. So a Heavy with a shotgun is not much different from an assault or even a scout with a shotgun.

Second is platform centric trying to fomulate a role best suited to the platform your throwing modules. For example If i got a tank what is the best way to make it 'tanky'. Answer Big guns, big defenses and unstoppability.

Now onto you wanting to try everything basic need to also understand that the more advanced items are a bit more 'special' in thier own way and the small difference becomes big when applied for all the wrong reasons. for example a maxidamage fit HMG can tear a close ranged dropship apart easily. Thus this falls in your definition of 'weird' fits.

Another build I've seen was a duelist, An assault or logi suit with a scrambler pistol as thier primary and only weapon. Equipped with small weapon upgrades. That thing was dangerous at range and very hard to close in on.