As you say, digressing, and meddling to the extent of iron plates and magnets obviously works, but is a bit OTT - I suppose that is what our hobby is in the search of realism.
I just found it disappointing when I had one, finding the Bachmann 66 had no problem with a big rake of bogie hoppers, but the so-called British-based railways powerhouse 70 couldn't touch it - so I sold it!
Back to HATTONS' 66 - not long to go now, and can't wait - should be excellent by all accounts, and several 'unveiling video' could be interesting.
If any of you out there do these, how about an 'independent comparison' between the 2, or more, particularly wrt performance - smoothness, slow, fast, load hauling?
Al.