suggestions

Strength OP. We need better reasons to go for Dex bots, and because the block percentage maxes out at 70% that's pretty much our only advantage over high-armour bots gone at higher levels. Additionally, there aren't very many dex-based weapons which are equippable. There's one or two, and several in the lower levels, but in between huge gaps in level.

So, incentives could be critical hits, dex-armours (not a good idea), more shields, unique white shields, higher block percentage caps, etc.

Some dex bonuses like crits could be cool, but these things are tricky to balance and I've mostly steered clear of issues like this in bots4 by piggybacking off bots2. See my related response here: http://bots4.net/forum/4/5642

critical hits and unique shields sound like good ideas