Back when the show was airing I remember we had a discussion about names - names are very important to this season in particular (see all the pointed name dropping in those various roadhouse scenes).
Richard was one that I couldn't get over - it can't be a coincidence that the doppelganger's son is named Richard, and Cooper becomes a character called Richard. You can go a couple of ways with it though: does Richard (Dick) mean Cooper in 18 is the offspring of the Bad Cooper, i.e. a product or "act" of the Bad Cooper as you say? Or is it an indication that the Richard is only half Bad Cooper? Or are Lynch & Frost using names as red herrings as they did in the original series (Mike & Bobby etc), just as they may be with numbers and that infamous flashing plane windows scene?