True on the difference between swelling and puffing. The high mah and discharge capabilities that they are stuffing into the roar size cases is pushing the limits. Would be nice if a little taller case would be allowed.
The case size is years old and was fine for light 1/10 buggies, ST, 2wd sct and old school light 4wd SCT. Now SCT power and weight is nearing 1/8 levels and were trying to stuff lipo cells in the old school cases and any normal expansion is pushing against the case limits.

I guess then you would have a 1/10 stick pack case and a SCT stick pack case so that may be too much of a niche for manufacturers to deal with. Most of the 1/10 lites have a height limit with the top plate where most if not all of the SCT heavies use Velcro straps so height is not an issue.