Second update today, but this is work I've actually done today. I've now added rivets, probably all I'm going to add (I think it's possible to go over the top.. i know, controversial). I've added armoured plates to the sides, they were looking a little bare. I've also added the plating to the wheels. A big job of going around and filling gaps on there, but that's the result of the soft mould.
I'm really happy with this, I think it's got the same solid, hamfisted waaagh type feeling the epic model has. And that's exactly what I was going for. Woot.