I've now got the whole 1000G in the game (basically the Xbox equivalent of getting the Platinum for you PS4 users). Unlike most games I've done this in, however, this is one that I'm still eager to explore. There's so much content in the sub-stories and open world to explore, as well as so much potential for DLC missions (of which I assume the Time Machine will play a big part in).
Got to say, Mira was surprisingly easy for a secret boss. The only difficulty is that his great amount of health makes him a pretty big tank, though I was still able to beat him with a team where the only character that had surpassed Level 90 was Ultimate Chadhan. Hoping they add a wealth of content going forward, considering the level cap being 250 and the highest boss being 200 (Villainous Gotenks and Vegetto rematch) leaves a pretty big gap open.
Also, the revived Cell fight tries to plug a potential plot hole by saying Cell was bullshitting in his explanation of his survival through the nucleus in his head. Got to commend the developers for putting in the effort to make parts of the story like that more consistent. The battle against revived Dabura was one of the most entertaining sub-stories thus far.