It's not so much that the Troglodon is bad... there are just other units in our book that fill it's potential role better. Most people are going to take 2 Skink Priests for Dispel/Cube and with the option for Beasts they are even more useful. Even if you don't take 2 Priests, I still think you'll take atleast 1. Other units are better at ranged and CC than the Troglodon. If I could use the Trogolodon's roar every turn then I would say it had a useful utility role. I'm not spending that amount of points on essentially 1 round 2 or 3 extra hits. I'd rather just spend that extra points on a Scar Vet or more Saurus.