I would like height sliders too, but I honestly at this point in time, don't see it happening. The game is going on 7 years, and yes they said TS4 has "many, many more years", but to implement height sliders, every single animation in the game would need to be adjusted for each life stage. (cooking at counters, opening fridges, riding bikes, showering, sitting, kissing, hugging, the list of animations that would need updated is massive. Just think about every single animation your sim does.
I don't think adding height sliders will bring in a ton more people to the franchise to reap monetary benefits for EA to justify the time and resources it would take to modify all of the animations. TS4 is synonymous with reusing existing animations as it is.
But, maybe if they're reading these Feedback threads it could be implemented into TS5 from the beginning.
