So with the addition of norsca one of the glaring issues of beastmen has become a little more prevalent. Dealing with monsters and armoured monsters.
Beastmen got several ways to deal with cavalry etc but they struggle a bit vs armoured monsters because the minotaurs have a tendancy to die very fast because of their low armour and gorebulls are slightly overpriced if you take more then the base model atm.
One of the biggest changes i think thats needed for beastmen is a change to how Ungor Raiders work, Right now they are a mediocre ranged unit that can hold slightly in combat but because of the units pricing it doesnt do any of those roles very well.
What beastmen need is for this unit to be closer to goblin archers in terms of melee capability and cost, thus inadvertedly making them more powerfull in the ranged compartment because they are going to be cheaper.
I would initially propose to lower their cost to 400 and nerf melee stats appropriately, as what beastmen needs is a solid ranged unit that can help them deal with large single target monsters, like giants, Mammoths, spiders etc. This unit could fill that role without breaking too much with lore or making the unit seem out of place as ungors are not very strong in lore.
Most other changes involve changing their spearmen a bit as right now they tend to lose to everything because of their low LD and low damage vs everything. By changing their spearmen with higher leadership and slightly higher Anti large/WS you could improve beastmens chances of fighting off units like wild riders, skinwolves etc because you can screen your own centigors/minotaurs with cheap cost effective spears.
When all of that is said the Beastmen ror units are great, Their design and roles are brilliantly mixed into the roster and was exactly what the beastmen needed. I feel like all their ROR units are well balanced and serve a specific role in the army that they needed so great work on these units.