Right, so I want to base my figures to be able to use CoC (or a more modern development thereof), IABSM and also AK47. There's no reason why I can't use multiple basing really, but I want to have the flexibility of having individual basing.
So here's what I have come up with.
- all "rank and file" figures based individually on 15mm circular bases
- these can be grouped together in socket stands of 2 or 3 which have a maximum frontage of 4cm. Depending on how these are arranged, the "triangular" bases will have an average width of 3.3cm, which is functionally the same as the AK47 3cm bases of 3. So it works well for AK47 and it makes it easier to move figures around in multiples.
- officers/big men (for IABSM) will be based on polyhedral bases. Divide sides or vertices by 2 to get the level of Big Man. So a Big Man IV is on an octagonal base, a Big Man III is on a hexagonal base, a Big Man II is on a square base, and a Big Man I is ... well actually he's on a 2cm round base, so the pattern breaks down there, sorry.
- light weapons teams don't really matter for IABSM, they are counted in with the section strength, but they do for AK47 (if it's an RPG-type weapon) and for CoC. It is difficult to spot a LSW on 15mm figures from a distance, so I will mark them, and figures armed with and RPG, LAW or other light support weapon, with a small rock on the back of the figures' stands. For CoC these will be grouped with their assistants on the same base (of 2 or 3). For AK47 it's a stand of 3 anyway. So "cherchez la pierre" for such figures.
- For larger teams crewing heavier weapons, e.g. for HMGs, medium mortars or the larger RCLs, these can probably be fitted as stands of 2 or 3, depending on the number of figures. I haven't experimented yet, but I suspect some at least will not be individually mounted.
Admittedly unified field theory may have to wait, but I'm happy with this solution as a way forward.