Can loading capabilities of shuttles be changed?
Yes. The limitations are, however, that only 8 units can be displayed as in the shuttle when you click on it (or in the Bunker, Overlord, Dropship)… even though you can have up to 255 units in a transport at one time… (1 dropship with 255 wraiths seems… evil 🙂 You are also limited to placing units in the bunker that have a specific bunker wireframe stablished already. Once you get over 8 units, you have to select the Unload All button. Unloading by portrait won’t work after you release the first 8 – it won’t update the portraits to show the rest of the units. For some units you may have to add/correct images in the various ???wire.grp files in the MPQ archive. Tranwire.grp is the one I think you will most likely need to change.