Greg, firstly, thanks so much for the effort you put in to the VR community.
I hacked together a more tracker-like rendermodel that I am now using with driver4vr. I’m uploading it in case you wish to use it instead of the original steam controller model you use now for the d4 trackers.
The model looks a bit like a black tracker but without the stupid prongs and with a glowing yellow D4 on the top. It is also a bit smaller than the normal tracker model so its easier to line up.
I ask for nothing if you decide to make use of it. Just trying to help out.