Depending on your raid's comp, AoEing the adds can be frustrating with how fast they die. My raidmates tend to smash the adds's faces in, so I also focus primarily on single target. I run EotE, PE, and SET for mythic Beastlord. When adds do come out, I try to time them reaching the boss with the end of a Chain Lightning cast so I can get EQ out quicker, but it doesn't always work to my favor.
If you really want to try for AoE you can run Liquid Magma. You won't be able to use LM for every add pack, but you can use it for every other one. Just use it when the adds are out of the gate area.
Looking over your log for your longest fight on Beastlord,
- You might not be casting Earth Shock often enough, possibly wasting Lightning Shield charges and 2pc uptime.
- Don't use Lava Beam. It's much more important to get the boss and his mounts down.
- Looks like you're prepotting a little too early.
- You're using UF a lot. Unless you need to move (quickly or have no instants to cast), there isn't much reason to use it so often.
- Lots of FS the spears. Unless your guild is having issues killing spears, I wouldn't dot them so much. (Another reason to use Liquid Magma, LM will seek out the adds and also hit the spears.)
You're actually not too far off on dps from what I was on my guild's first kill of it, our ilvls were about the same too. I made a lot of mistakes that night and have learned how to better deal with mechanics allowing me to focus dps better now, so hopefully this post helps you some.