[TheMagicPenguin]

I'm not 100% sure if having six wheels woild give you an advantage over having 3 or 4. The real advantage with this design is manuvrability.

Having a hexagon robot would allow you to not get pinned easily, and also the added advantage of having a smaller turning diameter.

I can attest to this advantage. In my first year of FTC we created a 4 omni wheel robot hexagon frame, and a round shell. Having this rounded shell let us cut corners that no one else could, not get pinned, and when turning we had no corners that could get caught on obstacles (i.e robots, field elements, field perminiter).

Here is an attached picture: