And your sure of this or just talking out your arse????. Maybe your thinking of straight axle front suspension like a Heep or did the dealer tell you that?
Alot more play?How much then?
They both have the same amount of flex ,just the TE achieves this with much larger sway bars that are hydraulically operated to get better ONROAD handling in it's stock form and still maintain articulation .
Add aftermarket UCA's with a bigger ball joint and you'll get at least another inch of down travel and the sway bars will still not be the limiting factor on the 5th Gen IFS. The stock SR5/Limited sway bar is skinny and has plenty of flex.The front CV axles can only be angled so much before they bind on a IFS and will be the ultimate deciding factor on articulation anyways.That's why people do a SAS on a 4Runner.
And yes ,I've actually replaced suspension on both KDSS and non KDSS and the upper ball joint on the UCA limits the down down travel and the bump stop on the frame is the limit for up travel. Tried it with and without a sway bar.