The show is still leaning too heavily on the audience's recognition of BB characters. We know, as Breaking Bad fans, that the reason Mike didn't press charges is that he wants Nacho released. But if we hadn't seen Breaking Bad, we wouldn't know that. The writers seem to assume we know that.
No, I think its the opposite, because your a BB fan
you assume Mike wanted Nacho to be free. There is nothing to indicate that this Mike, in 2002, is working for anyone (like Gus, Tucco, etc..). I would think that Mike is actually working in the booth and his association with Jimmy/Saul gets him connected more to the underworld of ABQ and then eventually connected to Gus. There was nothing about last nights episode that shows Mike intentionally trying to get involved with Nacho's case.