I try to make sure that the main hero has: logistics, earth magic, attack, defense, leadership, and/or luck (these two skills are almost equivalent), tactics – these are the 6 main ones, archery (if there are 2 archer units in the army), if the map is large, wisdom + air magic, and preferably intelligence, pathfinding (if there are many sands, swamps, or snow on the map), navigation (if there is a lot of water), fire magic (if you manage to quickly create a berserker). Eagle Eye, First Aid, Artillery, Ballistics, Literacy, Training, Scouting, water magic, resistance, estates, mysticism – forget about it. For In the Wake of Gods, the setup will be slightly different, but I haven't played it much.