There is also another option of casual game to play with more infanty forces, if you prefer such style (and if you play partners will agree and put some effort... or wait). Last year fan-made non-official rules for brigade level had been published. The problem is that they are still only in Polish, so you will need some translator (google translator won't do enough IMHO). Rules in Polsih are
here (1st post - preparing a game, scenarios, tactics, victory conditions etc.; 2nd - rules of Army composition).
In general - this variant allows to combine 2 skirmishes, 2 regiments or 1 and 1 from above, and none of them can be chosen twice (without some exceptions). It merges simplicity of Skirmish level with deeper tactic of Divisional level (hidden and general tasks/missions).
The variant had been played and tested - for example during Divisional Tournament in Lublin, Aug. 2016 - and appeared (at least for me) really nice.
Official variant of this level is "under construction" and has been announced to be shown this year and - I only suppose - may be published next year.