Re: The Flea.
I did consider taking parts from the Gun, but since I'm already using a Gun (and might buy some more, it's a lovely sculpt) any potential Gun to Flea conversions might stick out a bit more than I'd like in my collection. It's legs and those of the Locust are pretty close in scale though.
For cutting down the metal sculpt to fit the scale of the newer one, I think the old metal sculpt is actually closer scale-wise. (similar height, length of legs) But the 'body' is still rather noticeably larger compared to the new plastic one. I'm not really sure how much I could reasonably cut either the old or new metal sculpt down though and keep a recognizable body section.
Knew it would be a longshot, but I do like the Flea a lot and it would be great to see the modern sculpt more readily available in the current scale. AFAIK there is no plans to release the plastic Flea outside of the Mercenaries box.
On the subject of light mechs, has anyone heard about any plans/talks for any upcoming light mech releases in general? The more recent releases have all been for heavier weight classes from what I have noticed, and there's quite a few light mechs I'd love to see in metal or redone in modern sculpts- Stinger, Wasp, etc.