I played last week a 1500 points game (have lot of units but not enough behemots for 2000 list).
I had Oldblood on carnosaurs, skink chief BSB on stegadon, 1 skink mage 2 with cube of darkness, 18 saurus warriors, skink wich javelin and blowpipes, 3 kroxigors, 5 chameleon and 5 terradons.
I played against beastman with 20 infantry with great weapon in rank of 6, 5 minotaurs and shaggoth. Lord minotaur and shaggoth had 2+ armour save and where more or less untouchable. Luckely i stopped shaggoth 4 turns with moonson spell and the lord couldnt reach a melee.
Minotaurs died due poisoning attacks, infantry in melee against stegadon+ saurus. I won by 400 points more or less.
Some through:
Magic can be nasty even at level 2, if the enemy doesn't a a level 4 caster. Mostly due the limited dispel range of only 18. At 2000 points if you don't play a slann i would suggest at least 2 casters, a wand of jet and a cube of darkness.
My oldlord on cold one got ogre blade, it worked well against minotaurs but i don't see any way to kill all monster in the future without a carnosaur or someone with armour save of 2+. I wouldn't play that but I guess it would be necessary at 2000
Javelin mobility is amazing!
The skink chief an giant bow was nice, however big target don't give longer the +1 to hit and you hit at 3. Even if you wound big monster had good armour save and I manage just to wound once shaggoth for 3 wounds, but after 4 rounds of shooting...So not completely satisfied.
TOW has become a monster/herohammer, completely different from 6-7 edition as i played. Thats the biggest thing i worry about. Not sure i like it. Not sure either legacy army are so well done or balanced.