[quote=@IceHeart]
Imprompt Poll.

Just out of curiosity, how do you guys feel about the Saiyan Race being extinct?  Yay?  It gives the other races more screen time and prevents Zenkai abuse.  Or, Nay?  We want Saiyans and we promise not to abuse their racial traits?

Thoughts appreciated.  Personally I think the roleplay is fine as is but I'm happy to hear input.
[/quote]

Eh... Even if we're moving beyond Canon at this point, I still think this is a bad idea. 
In DBZ, the non-Saiyan fighters became something of a joke due to the raw amounts of power Saiyans were able to bring about, and once Super Saiyans became a thing, right around the Cell arc, it was pretty much 'Saiyan or GTFO', no one w/o Saiyan blood or an equivalent transformation could fight the enemies that were showing up. 

Now, I'm something of a fan of the Dragonball Online thing - where the Saiyans as a race are extinct, but the bloodline still exists within humanity, the only caveat being that it's extremely thinned out to the point where all humans can, with training, use ki efficiently, but only those with a high enough concentration of Saiyan blood could go Super Saiyan (though the term may very well be Super Human at that point.)

So, on the whole, no, no saiyans. 

But I do remember reading this fanfic that took the ideas of Androids using Ki and went to a logical extreme. I don't remember it off the top of my head, but it had something to do with the fact that, because androids could use ki, it wasn't entirely based around *life* energy, and as such there was a way to create it with machines, and artificially increase fighters' power levels.
How'd they do this?

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[img]https://36.media.tumblr.com/217aa6472128482d9ac0d8cb8455861c/tumblr_inline_nv6445isuF1twyc1p_540.jpg[/img]
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But, it ended up allowing a pretty freakin' awesome fight between SS Goku and Krillin. 

So, if we went down this route, I'd be more willing to let Saiyans in on the action, but I wouldn't want all of this right out of the gate. More like a series of escalating threats, before the Saiyan arrives and the heroes have to do something drastic to keep up. 
There'd have to be a risk though, but I'm rambling, so I'll stop here. 

TL;DR: 
No, don't do it.