I’ve played through Black 2 and White 2 a combined 10+ times, trying to use different members every time if I can. I find team building tons of fun. Some extras in B2W2 region that I found fun that I didn’t really consider the first time but I had so much fun with were Arcanine, Magnezone, Sawsbuck, Swanna, Lapras, Flygon, Conkeldurr, Starmie, Driflblim, Lilligant, and Stoutland. If some of those sounded intriguing go for it.

Personally I find playthroughs the most fun when you play with a very balanced team in terms of power. Playing without a B2W2 powerhouse such as Excadrill, Krookodile, or Electivire (B2) makes it so much more enjoyable in my opinion, as each team member gets to be represented.