This would have been nice to see updated in 2022... hopefully now 2023. Our office uses a custom wall type tag with built in instance parameter for height that is manual text based entry. For standard walls, this works great as our height parameter is keyed to simplify: to underside of structure (S), underside of ceiling (C), 6" above ceiling (C6), underside of countertop (CT), and partial height (P, or actual dimension, example: 8'). With stacked walls not reporting, or rather graying out instance based properties, our text based height parameter was rendered useless on a recent large industrial project where instead we were able to resort to a duplicate wall type tag, visually identical to our office standard, but the S for height was preloaded into the new stacked wall tag as text, rather than a modifiable instance label. It works for now, but has it's limitations.