Hi Missy, I can see what you mean, 2mm figures must be quite difficult to get well detailed. But then again, I'm longing for the detail of 7mm figures, so I suppose the grass is always greener on the other side
In the longer run, surey plastic is the way forward for greater detail in model figures - also for 2 and 4mm scales. I do think wargaming has proved this.
In fact, I wonder if it might be possible to find a few wargaming figures here and there suitable for model railways? Eg some 25mm wargaming figures seem to be 1:73.2 (and there appears to be some in 1:152 too), see the table here: http://en.wikipedia...._figure_(gaming)
Of course, the trouble would be that most are armed and have three heads! But it appears there is a type of wargaming called Victorian Science Fiction, which might offer the occasional useable figure, eg: http://marbles.froth.../vsf_men_1.html