While using combinations provides you more skills in the late game, you might be waiting quite some time in the early game before getting certain specific skills. Finally, keep in mind that by increasing the pool of skill you can research you also reduce odds of obtaining each skills individually. This will keep the number of research equal between players. For example, you can decide that each players will have one dual or quadra spec and the two others being single or just no spec at all. FAQ regarding combinations- the point is to offer more customisation, you can still have a very balanced game experience if you setup all leaders from all players to play with the same number of spec, the number of stars on icons is here to help you. Since V7.0 and more, all possible combinations of Adept+Master combined into one unique specialisation, a set of seven quadra-combinations, one hepta-combination, and one octa-combination.

This mod is focused on Specialisations and adds more than 40 new spells to the base game, with:

Age of wonders 3 check mods