Awesome, thanks for the clarification
Noisepurge .
Seems like a very demanding, but rewarding game!
Indeed! And like others have posted, nothing quite similar exists so it's worth suffering through the toxic community as well.
As for good teampicks,
For example on defense, if the rest of your team picks fast characters that are intended for roaming the map and being offensive defenders. It's not a bad idea to pick:
Rook to give everyone armor, also has the MP5 with an ACOG that's one of the best guns on defense (simple but contributes already to the whole team)
Castle to block some windows and doors (but learn which doors to block, don't block all!)
Yager,
Mute and
Bandit to block electronics/grenades/wallbreaches (solid picks to disrupt the enemy team)
Attacking is a little harder as you need to, well, attack, but you generally have better weapons:
Thermite and
Thatcher are a great character combo. (Thatcher to disable electronics and traps, Thermite to breach reinforced walls.)
Ash and
Fuze are solid offensive ones with explosives (unless playing Hostage, never pick Fuze if the game-mode is Hostage!)
Twitch has a unique offensive drone, use it to destroy defensive gadgets. And has the Famas, even if it's recoil was recently nerfed.
And yeah, Siege School videos on youtube from Varsity Gaming can be useful to learn some tips and tricks, some character related info might be outdated but still the tactics and such are of course valid stuff.