Broly's race isn't a bad idea, as he does have slight different transformations. Goku, Vegeta, and Trunks went buff with acended trans, but Broly went extremely buff... muscle, endurance, strength, and power wise. Broly is basically a different type of saiyan, a special but insane 1. I believe his race should be inputed, although his transformation gains or multipliers should be different. He went through 3 transformations if you didn't notice by the way. His first was where his hair was redish yellow as a super saiyan. Next was where he got even angrier and turned with yellow hair. The last one, is where he went all out insane making a massively 30 second or 1 minute green auraed power emit from his body and than make things white, black, and grey. That was his most look-alike acended super saiyan transformation. That is pretty much all of that suggestion... I came up with this one in a minute or 2 of thinking before I tried posting.
My real suggestion was supposed to be this. I read Ace's post and agreed with him about a lot of it, concerining Broly. But if Broly wasn't going to be put into the game as a race, than my thought of chance and luck came along. Every race should have a rare chance of becoming strong from birth or the beggining. Broly had a power level of 10,000 at birth. He was the lucky saiyan, but feared for it. The person with the lucky power at the beggining should have some flaws and convininces.
Let's say that someone chose Changling race? He/She got the lucky power growth. So they get the lucky Cooler icon! If you ever watched the Goku first meeting Cooler, Cooler was already in his transformation that Frieza had before he died, except Coolers isn't at 100% power. So Cooler MUST have an icon before he transed correct? All you must think of it as is Frieza, but less white, more purple, and even stronger. Not every race would get the lucky icon and power growth, but some do. Saiyans, Changlings, and Tuffles. Mabye the Buu/Majin race can have a choice? Good buu turns into Uub, evil buu turns into kid buu. Tuffles get Bebi's permanent transformations? But Bebi's transes don't have to be permanent. If you watched the series where Bebi finally lost, he left Vegeta's body and reverted back to normal.... But it does seem more fitting that he is permanent. If any other race but the once listed, got the power growth, they just get extra stat gains? If not, mabye an extra trans?
Well, that is pretty much all of what I have to suggest for now... I can become an idealist for you if wish too
(EDIT) I may have screwed up on Broly's transformation list... I don't think he had the yellowish redish hair. But I could of sworn I've seen it.
Thank you for reading and sorry it was so long.
