I don't mind 8's battle system but I don't abuse Renzozuken at all.
My problems stem from 2 things:
1. The entire orphanage scene. I find it completely stupid that 5 people who barely knew each other (Zell and Squall weren't friends and Quistis was kinda distant due to her being an instructor) all suddenly realize (well, not Irvine since he knew) that they all grew up with each other and their foster mother is the same woman they need to kill. There's coincidence and then there's stupid. Clyde and Relm fighting in the same team against Kefka can be written off as coincidence. Galuf travelling with Dorgann and then Bartz can be coincidence. I'd say the same about Auron and Tidus but Jecht asked Auron to do it so fuck that one. But 5 people who grew up together? I just call bullshit.
2. This one also applies to FFVII. There's very little that makes characters special in these two games aside from Limit Breaks, weapons and personalities... oh and base stats. FFVI and FFIX both had very distinct characters, especially in battle. FFVIII doesn't and there's no real incentive to use anyone aside for specific tasks aside from what the plot requires. Fuck, even FFXIII was better in this regard (even when all 6 l'Cie had access to all the classes, they are still used for different purposes).
I know that I seem hypocritical when I then say that FFV is my favourite game in the series since that also suffers from the same problem. But the difference is that you have to build your team in that game (somewhat). So... yeah.