@mdhutchinson, firstly I am also an MEP engineer, so I understand and I am in the same predicament.
Secondly, you don’t need to have the NBS plugin to use Uniclass. But I do suggest using the NBS shared parameters for the Uniclass shared parameter for title and code.
This will allow easier interaction across your firm, with clients and continue standardisation in the industry. As @erfajo notes, solid infrastructure is imperative for the progression of the digital side of this industry, with classification being an integral part.
However, I am unsure if you are UK or US based, and if stateside, moving to Uniclass might be slightly against the trend. However uniclass is generally considered better, and more regularly maintained.
As suggested, it is worthwhile getting in contact with NBS if you see improvements could be made.
But back to a solution. I use a tool called RF tools that can insert shared parameters into all families in a designated folder, and you can also assign values.
If your family library is organised into folders similar to that of the classifications, this maybe a good solution.
I understand it might be a mammoth task, but I think it will be worth it in the long run.
@erfajo I am interested in your Danish committee, could you give more details? (Maybe PM me? Thank you)