As Plusnet have raised rate limits on the current products to line speed for a large proportion of connections and times of the day I don't think that having rate limit rises for legacy products would be a bad idea. I know the onus is to move to new products which can have contract lengths increased, but don't see a good reason for not increasing the data rates on legacy products apart from the main objective of making people move to 'current' products to avail of the better speeds.
