I like this list, big fan of the Carcarodons' chapter tactics (I prefer Red Scorpions though

), but can give some critiques.
1. I think the tacticals could have a flamer to cover the enemy in wounds before charging/firing for overwatch. I try to do the same with my
CSM and Black Templars.
2. Mix the weapons for the devastator squads, so 2 lascannons and two
MLs in each.