Just a general comment.
Despite my dislike of their Paragon sound decoders (now mostly a moot point since they have decided to offer decoder-less versions of their engines - hooray!), BLI's steam mechanisms that I've worked with have all been excellent. I have nothing but good things to say about my own light Mikes, and my friends' T1's and M1's likewise have been excellent mechanically.
We really need a reliable steam producer in N scale. Some of Bachmann's stuff is really good (e.g., the Consolidation; the EM-1); some not (the Berk was a major disappointment in the mechanical quality department). Having BLI do consistently excellent steam locos in N would be a major plus, IMHO, whatever they choose to bring out.
John C.