Interesting, all slots I tried bigger 199 endied that I got an error message that sprite GU000.spr was not found or was it GU00.spr, because I have such a unit sprite in my sprite directory with only two digits. If I remember correctly this sprites contains the CTP1 UFO and as I tried it in the game, the game crashed as I moved, unfortunatly I did not take the time to figure out if it was the sprite, the slot or something else. And I don't remember if it was in the GU000.spr or in the GU00.spr format.
Additional I did not find the GU001.spr, so we can reassign this slot, I don't think we will ever have a use for the cattle and as it is a already in so...
For the Good sprites, I have a sprite in my folder called GG000.spr I took it from CTP1's GG00.spr. I know that it appeared in CTP2 as I gave if I remember correctly to the gold filed the value zero or negative values. I remember everything was right and the dummy ressource sprite appeared that I put into the sprite directory.
Also, Sprite 58 is listed as an Anti-Tank Attillery, when I believe it's the CTP2 War Walker. Sprite 118 is the C:CTP War Walker. Just a request, but could some mod maker (I'm still in remedial SLIC) use the C:CTP War Walker in a mod? I was trying to use it in some CTP2 games and renaming it a 'Mec.' It turned ugly real quick. Still much more for me to learn. If there's to be a Cradle 1.36, I'd like to see it in there.