Agreed, here is mine, Only the instrument pod is cactus, but why not protect it all...the vents are cut in but you cannot see that in this picture, airbag compliant too.The alternative, if just wanting to improve the appearance may be:
https://www.fitmycar.com.au/bmw/z3/convertible-1995-2002/bm-028a
I have had these both in my current and my previous Z3.