Today I was admiring the Small Scout in daishiva's MapView (it's become a hobby recently now that his program is patched to allow it). Anyhow, I was going through the MCD files and noticed there were a bunch of unused tiles for the Small Scout. From the surface, it looked like they could be put together to form a new ship. So I opened up the Small Scout map file with MS-Edit and entered in the unused tiles. Then I started to play around with them. Bingo, they fit! The normal Small Scout map on L1 is 3x3 tiles, but there aren't 9 unused tiles (only 5) so the final ship is 2x2 instead. See the two pics below, the first one is from MapView while the second is from within the battlescape:
For reference, here is a pic of the current small scout (quite a difference, eh?):
I ran a few missions with this ship and there are a couple issues with it. First, if you get inside and keep going up with a soldier in a flying suit, he'll eventually fly right out the top. Secondly, a soldier standing on L1 inside the ship is sticking out the top from his armpits up. The normal small scout isn't quite as flawed. It's possible that the map programmers realized this and decided to remake the small scout from scratch and accidentally left the tiles in.
Another issue is the MCD records for the unused Small Scout aren't set to alien alloys. If you count up the number of alien alloys in the unused map with the tiles set as that type, it comes out to 8 (9 if you count the one tile which I couldn't fit into the design). If you divide by 10 and then take the integer of the result you end up recovering 0 alloys. This could be another reason why it was left out: the programmers may have wanted the small scout to yield some alloys and the only way to do that was to increase it's footprint to 10 or more tiles. Anyway, hope you guys find this interesting. I sure did.