I took a moment to try and make a cuter-looking elezen (since Yoshi said they may make MViera look a bit more like them if they ever do let 'em out of the woods) and it would be entirely possible to make the body a little bit beefier and have it look fine for a number of base heads, it's just... the proportions for that body would need to be fixed hard. I never noticed how outright comically pinheaded and strange elezen were until playing around with the creator more. (Seriously, it's especially noticeable with the round, cute face--the only elezen I've made prior to this have been more on the haughty side.) They're almost... like small-headed aliens. I mean I like elezen but those proportions...It makes you feel like Estinien might beam down an abduct you in your sleep.
Doing more with less is always the best. I worry about how the workload would be even just tweaking the neck/arm lengths and adding a little bit of girth, but it's better than making an entire body from scratch. (Really, that neck is the most egregious thing--it makes the odd head/shoulder ratio all the more obvious. Even just fixing that might make the body look almost totally different...)