"Lately?" It's been a while since I've done any big projects. Here are a few examples of mine, though:
I fixed the pilots, added roof top details, re numbered, and weathered. Same for this SD 40, now SD40U:
I started doing this about eight years ago, starting with my Superfleet Dash 8-40BWs, and GP60Ms:
I've done some MTH stuff too. In the lead is an FP45, converted to fixed pilots, full handrails and added details:
Rolling stock too, of course. Here's a Lionel scale auto rack:
If I were to start over, it might well be two-rail. At any rate my attitude is that an unrealistic third rail doesn't mean I can't come closer to realism in what rides on it. These conversions have been fun and satisfying and that's what a hobby is supposed to be about.