So I'm confused. Did the Baki Gaara team work out well or was it actually not good? Sent us some mixed messages haha.
Either way, another route you could take is using dual fighters that do nin/tai damage on standard attack. They will do guaranteed crits of double damage so look towards nin like Kakashi/Sasuke/Suigetsu etc. Looking at who you have skilled up and whatnot Suigetsu and Guy will do a lot for you. You may want to consider Kakashi but, if not, you c*so use Lee.
At level 55 and 3k power per character you also don't need to worry too much about face tanking a few hits. Although you can still use Naruto if you'd like I believe at your level I used my main and would either use the triple wind clone passive (since others are kinda useless without all female team/against nine tails) or face tank it. Taijutsu teams definitely do more damage than ninjutsu only teams but those with mixed standards and ninjutsu/mixed mystery skills excel.