After looking at the base size list I'm curious about O&G Spearchukka's and Rock Lobbers. I know that they don't need to be put on a base, but if you can, what would be the recommended base size? I can maybe see Spearchukka's being on 40mm squares.
I put my Rock Lobbas on 50x100s. The 6th ed orc model hangs over a tiny bit. If I was going to do it again I would use 60x100 bases.
Spearchukka's fit perfectly on 40mm bases. That's what I use.
Well in 8th you can still legally use the old metal model on a 50 x 50mm base. So someone using a 100 x 50mm one doesn't seem unreasonable. The plastic one is only on the massive 150 x 100mm base as that's all the model would fit. I wouldn't have any problems at all with an opponent using a 100 x 50mm base for a zombie dragon, assuming it was done because that's the model they preferred.