Seriously I do not understand why people think Vegeta deserves to get some kind of "payback" on Freeza. I don't care if Vegeta has become somewhat of a good guy now, that does not change his past and who he was. He was a cold bastard even by saiyan standards. Vegeta back then was just as evil as Freeza was. There is no limit Freeza would not cross that Vegeta wouldn't either. Both would kill their own men to achieve their goals, both are power hungry, and both would do anything to be the strongest in the universe.
What does that have to do with Vegeta being good now? Why should Vegeta not get some sort of "revenge" for his poor treatment at the hands of Freeza now that he's become good? That's because Vegeta was an asshole in the past. The past was literally one evil asshole making another evil assholes life miserable. If Freeza weren't around, do you think Vegeta would have done any good? No. No he would not. He would still be a conqueror and he still would pretty much do what Freeza did, except with him on top as the leader. Vegeta deserved everything he got when he was younger as he was a cold saiyan. Do not for some reason confuse that dumbass dub line of Vegeta saying "He made me do it/what I am" as that's a load of horse shit. Vegeta did several awful things of his own accord and took pleasure in it.
Why would Vegeta deserve to get his revenge if all Freeza did was contain another asshole who was just as evil as him. What kind of story would it be if Vegeta was like "Yeah take that Freeza, that's what you get for stopping me from being the top genocidal maniac!" Oh wow, he really deserves revenge for that. Curse that Freeza for stopping Vegeta from being the top genocidal maniac. Vegeta should totally pay Freeza back for not letting him call the shots on destroying and selling worlds. Seriously fuck this stupid idea. If Freeza was actually the cause of Vegeta becoming who he was as an evil monster, then perhaps this would make sense. Except Freeza did not make Vegeta evil, Vegeta was already evil and delightfully enjoyed killing innocent people. So really whether Freeza was around or not, Vegeta would always be an asshole. Does Vegeta truly deserve revenge for a past where he was just as evil as Freeza? No. I would actually give points to DBM for once with that interaction Vegeta had with his alternate universe self who became King Vegeta. That sums up that if anything the whole experience turned Vegeta into a good guy over time. Without Freeza Vegeta wouldn't have become good eventually.
I too am tired of Goku being the main spotlight who gets to do everything. I don't mind Vegeta becoming a god or being equal to Goku possibly once again. However I think he just doesn't deserve shit. At most I can see Goku or Goku and Vegeta winning by working together, but then Vegeta doesn't kill Freeza since without Freeza, he'd have always been an evil bastard. It was the drive to beat Freeza that had him sought out the Dragon Balls to become immortal, and it was that drive that had Goku and Vegeta meet and soon become friends after all the arcs concluded. Vegeta was forced to team up with the earthlings so much he became accustomed to them, without Freeza he'd have nothing to fight or join against, so he'd always remain evil. Vegeta can play a prominent role, but to give him top billing over Goku just cause of his past (which he deserved to be miserable) is just silly.