1) Core Hounds are a pain, but if you manually spend 3 minutes clearing them, it's a non-issue (prefer AFKable, though).
2) Baron Geddon throwing you up into the air can be quite a pain to live through, so I try to be present for this fight.
3) Damage done to your shield is really brutal (broken every time I reach Golemagg). Minus Engineers, what is a solid "ghetto" fix for your shield breaking? Bring a backup? Reason being, even though the profile isn't zoning out and visiting one of the 3 vendors listed, it will just sit there jumping indefinitely when it tells itself to repair.