Because there are 4 parts to the Saga
True, but they are sold separately, so we cannot assume you have or will play all the parts. You can buy and then play any combination of:
- Baldur's Gate: Enhanced Edition (only; stop after defeating Sarevok)
- Baldur's Gate: Enhanced Edition + Siege of Dragonspear (and then stop, never reaching Amn)
- Baldur's Gate: Enhanced Edition + Baldur's Gate 2: Enhanced Edition (skipping directly from the end of BG1:EE to Amn, bypassing Siege of Dragonspear)
- Baldur's Gate 2: Enhanced Edition (start in Amn with a newly created character of a level appropriate to having finished Baldur's Gate 1; stop at the end of Amn without playing Throne of Bhaal, or continue from Shadows of Amn into Throne of Bhaal and play to the end of the saga)
- Baldur's Gate 2: Enhanced Edition (only; start in Throne of Bhaal with a newly created character of a level appropriate to having finished Baldur's Gate 2: Shadows of Amn)
- All components, in order
Since you may not even own all the components, you might be forced to skip certain content. Which content you skip, if any, affects the answer, which is why I asked how far you plan to play.
More generally, any time you are in a forum for a game which offers major choices like this, you should tell us which choices you made. Otherwise, you may get responses that assume something else. In my case, I would have assumed you skip Siege of Dragonspear since it is sold separately, so you may not have it.
Also, I note that I asked whether you planned to dual class, and it was only when someone else reminded you again to tell us what game you are playing that you addressed my question.
Isn't it redundant to take another mage if you already have a fighter/mage? I guess that's the crux of the question. It's maybe silly to have 2 thieves, or 2 clerics. So if you have a fighter/mage already, would you take Edwin or Neera?
No, it is not redundant. A party of multiple mages can offer the opportunity to specialize, allowing you to cast more spells per round. In my opinion, the main drawback to a party of multiple mages is that some useful spell scrolls are rare, so you may not be able to have every member learn every spell at the same time. This gets worse as you increase the number of mages. If you had a Fighter/Mage CHARNAME and a pure mage companion, the Fighter/Mage could concentrate on spells that improve his fighting ability (Stoneskin, Haste, Blur, Mirror Image, etc.) and on those that can be quickly cast before closing to melee the enemy. The companion can concentrate on spells that are slower to cast, but more powerful.