Assuming Heljan (or another company) will follow up the successful L&B Manning-Wardles in the not too distant future, which locos do you think they should choose? Bearing in mind: 1. Bachmann seems to have decided on the Baldwins (if they ever appear), 2. The design chosen should be able to cover various iterations (by era at least, and preferably by there being several different locos of the same design), and 3. The loco should be popular or on a popular line to ensure maximum sales. Any suggestions?