It might be days before I can resume playing since I need to revise my thesis again. Before I forget to say this, my OTP so far in the game is Selphie x Irvine haha
I really like Squinoa but I just don't like Rinoa so far haha
And yes I find Rinoa to be useful and usually my party is Squall (magic mostly) Zell (physical attack/support) and Rinoa (offense). As for characters okay here are my thoughts so far:
Selphie is cute and fun and she and Zell can be siblings but that's everything about them so far. Quistis is... well I dunno I can't find anything to make me emotionally attached to her. Irvine is kinda cool but it's funny how he chickened out to the last moment in Edea's parade.
In FFVII usually each party member has his or her own arc to explain his motivations and his story. Barret with Dyne, Aerith with Cetra, Tifa with Nibelheim, Red XIII with Seto, Cid with his rocket, Cait Sith with Shinra, Vincent with Lucrecia and Yuffie with Wutai. I wanted something similar with FFVIII but don't spoil me. Maybe they will explain other characters maybe not. I'll just see.
And relating to the LTD I find the argument Aerith is a white mage like Rinoa is to Squall canonz omgosh
LOL Rinoa is like my main magic caster and she deals the highest damage in my party and she doesn't even use a staff. Her weapon is the only one I have modified so far and it's pretty strong. My healer is Squall or Zell. Her limit break is even an offensive type.
Yuna and Garnet are summoners so yeah, there is not really a pattern of white mage-main hero pairing in FF. :/