What do you mean your side of the fan base? Are you talking about people (mostly women, I've observed) that will only play as or will only be happy with female characters? Then yes, you're probably right.
Lara Croft appeals to me and I'm a guy. There are a lot of women out there whose top pick is a male character. We, unlike some of you in this thread, aren't so bought into certain ideologies as to be completely unsatisfied with Smash or its DLC if we don't get an "X" character, in this case a female DLC fighter. We're just happy with anything, really. Bummed sometimes, sure, but we're not freaking boycotting the pass because of it.
Sakurai and his team are no doubt trying to satisfy as many fans as possible with their character picks, as evidenced by the fact that we have 80+ characters in this all-star fighting game. So for you to criticize them as "not caring" about you like you're being discriminated against is pure conjecture and is quite ridiculous. You've guys have got to let go of this mentality that if people don't pander to you that you're going to just remain unsatisfied. If you do, then you will be missing out on all the great things you do have. Sure, I don't have Isaac and I'll probably never get Scorpion. But man, I am so glad the team has worked so hard to secure the rights to the fighters they have. What an awesome privilege we have to put Mario, Sonic, Samus, Banjo and Kazooie, Cloud, Mega Man, Simon, and Link on the same screen together!