I believe the biggest opposition of "boob" sliders or other body sliders come not from the players (we're largely in favor of vast customization options) but from the devs themselves. Not that they think their races should look exactly one way or another but I believe it has to do with how it'd affect armor models on characters as well as animations and clipping. However I do think the devs could compromise and instead of dealing with making gear/animations look proper on all slider settings, they could have presets, or say, 5 body type settings or in this case, 5 "boob" size settings. For example, say that the current breast sizes in Wildstar would be 3 or 4 depending on the race. Five would be the max size (pretty big) and one would be very small (probably not flat but you could add a 6th option for that). Instead of designing gear for an entire slider's worth of options, they'd only have to make gear look not too warped across 5-6 boob/body shape presets. In this case, they could have slightly edited models of a particular gear model for sizes 2 and 4 or perhaps 2 and 5 if there are 6 settings. This would double or even triple the work with gear design alone, not to mention how body size would affect the gear models, but such is the price of extra customization. At the very least, Carbine could expand on the customization options in future patches after launch or even an expansion and give premade characters the option to resize their characters for free one time after the patch.