I'm getting tired of seeing Jim Raynor's face every time I launch Starcraft 2. Is there a way to change the image without violating the games EULA? If so, is there a website that has preconfigured images we can use?
To replace the image you would need to modify the game files, just like when you want to replace any other images.
The picture you are looking for is
Assets\Textures\startupimage.dds in the
Starcraft II\Mods\Core.SC2Mod\base.SC2Assets.mpq file. Modifying this file is probably against the EULA and can cause all kinds of trouble, so it's recommended to keep on looking at Raynor while the game loads.