Only thoughts :
- +10k TRR is great imho.
- Reducing the number of players having both Block AND Tackle is good too. I think it's removing Block from Longbeards that will hurt them most.
- Removing Block from Longbeards will set them more apart from Norses, which is good
- giving them Wrestle is not very "fluffy" with players with short arms, but I agree it's not a very solid reason. Besides, it's why I never loved Tackle on them. Grab instead ?
- adding +1 MA to Longbeards : they will no longer be the slowest team, and it will be a great boost. Not a good idea for me.
- removing S access from Longbeards : a good idea to consider. It's quite an advantage in a league.
So, my 2 cents :
- remove Block and Tackle and S access from Longbeards. Add Stand Firm ("as unmovable as their mountains"). Price : 50k
it's a huge nerf, so (and every dwarf coach cheers : )
- GIVE THEM BACK SECRET WEAPONS !!!!
Remember, BB dwarfs love to fill the pitch with dynamite and deadly machines !
(and it will allow us old BB nerds to put our old 2nd ed dwarf chainsaw models back on the pitch, HAHA ! )

and it will give them more opportunities to spend their TRR (so you don't need to increase their cost)
Of course, you've got a totally different way of nerfing Dwarves : change the Block/Dodge/Tackle rules !!!
