Another example of this is in the use of tablet weaving. In the article "Tablet Weaving on Reconstructed Viking Age Garments – and a Method to Optimise the Realism of Reconstructed Garments," by Lise Raeder Knudsen (from the book Refashioning Viking Age Garments. SAXO-Institute, University of Copenhagen), the author has a chart that shows the prevalence of tablet weaving in graves from different time periods. During the Migration era, it ranged from 20-30% of graves in various parts of Scandinavia, but during the Viking age less than 5% of graves have evidence of this practice.
What I take away from that is that this form of trim should be used sparingly, if at all. Not every edge of a kit should have it, and perhaps it should be used only for high status personas. If I use a tablet woven band, which would have been rare, then I would perhaps not also use plaid in the same kit (another less common item).
Another, earlier example of trends, is in this fantastic article on early cloth by Karina Grömer. Textile Materials and Techniques in Central Europe in the 2nd and 1st Millennia BC.
In this she has a fantastic chart showing how common things such as weave structure, use a dye, plaids and embroidery are. They are displayed as being important techniques of the period down to single evidences. It generates fantastic food for thought for the reenactor.