No Fog of War and No Fog of War (Player Turn only): it removes the fog of war so you can see and check starting positions of all factions. It can prove very useful to modders.
Modding Tools: while it is slightly more comprehensible than No Fog of War mod and contains more tools (for example it lets you see normally hidden Skaven settlements), this utility does not work in the Eye of the Vortex campaign.
Pack File Manager 5.0: a .pack file extractor and archive tool. PACK files contain all the data and assets of Total War game. You can edit existing Total War data packs and create new ones using this tool, somewhat replacing BOB the official utility for creating packs.
SaveParser: a savegame editor which makes it possible to edit savegames of most Total War games including Total War: Warhammer II.
Consider installing wine-gecko and wine-mono for applications that depend on Internet Explorer and .NET, respectively. These packages are not strictly required as Wine will download the relevant files as needed. However, having the files downloaded in advance allows you to work off-line and makes it so Wine does not download the files for each Wine prefix needing them.
Pack File Manager Warhammer 2l