Even though I could restrict the plugins to specific code compliant or engineering restrictions I have opted to leave things a little more open ended for the designer. For example with a framed window or door you could go with one, two or three trimmer studs or none at all (OVE), the choice on how to use the plugins is up to you the designer.
I am not opposed to adding additional features for OVE but I just need to have enough demand from the user base to justify it.
I’ve actually had numerous requests for SIPS and metal studs but both of these features are beyond the scope of the current wall plugin. If I do add metal studs I will probably create a completely separate wall plugin since it is such a different beast.