Goku: No. For someone who was presented as so skilled in his childhood days, him letting his guard down this much is absolutely stupid.
Vegeta: No. Should've been oneshotting fodder with SSJ and SS2 if he was being efficient, but hasn't.
Gohan: Yes. He's been the team leader and actually put forth a battle plan, which is more than can be said for anyone else.
Piccolo: Yes. Same reason as Gohan, as well as the fact that in sticking with Gohan, they've been making an effective duo by sticking together.
Kuririn: Yes. An effective moveset that allowed him to play an excellent support role and even managed to help his wife out. Can't blame his loss to Frost considering the difference.
Roshi: Yes. Easily the most skilled member of the team (though Kuririn comes close), having defeated three opponents in a row, one of which had superior power, allowing Roshi to show the extent of both his skill and techniques.
Tenshinhan: No. Maybe if he had the sense to propel himself back into the ring or not let his guard down, something he would've made sure not to happen during his assassin days. Definitely the jobber of U7.
17: No. His abilities will be made use of later on, but the fact he hasn't been going all out despite the stakes and despite doing so not affecting his stamina makes his performance seem pointless.
18: No. Her performance is all over the place. First she struggles against an opponent in the same league as Clearin with no special abilities, yet later presents feats to place her consistently above Base Galu, and some implications of her being in the same league as her brother.
Freeza: No. Hasn't done much other than take down fodder.
Tldr; only impressed by those that kept to the strategy like a team logically should.