Mine were a mix of old Foundry, Gripping Beast, and Old Glory (mostly), and I also had 400 figures in 8s on 80mm by 60mm mass army bases. I think the idea was to allow the individual figures to be grouped on magnet bases with the same frontages as the mass figures, for Warhammer Ancient Battles. However, I’ve since sold the mass armies, and the skirmish games figures soldier on. I don’t recall having too many that overhung the 3/4” bases, but I guess I would have trimmed them and lived with it. If I were starting fresh again, 1” bases are more stable in skirmish game play. The 3/4”s were a compromise, although they do also have the benefit of packing a lot of figures into my magnetic storage boxes.Why 3/4"?
The built-in bases on my figures are a bit large for 3/4".