I think people overstate how often Enchanter's die, at least soloing Enchanter's. From 57-60 on my Enchanter I spent probably 90% of my time in HS West, never died once, capped out once and gated out while a pack of mobs was AOE mez'd once which I guess could be considered a sorta-death.
I don't remember how many times total I died while xping my enchanter, but it wasn't very often and far less than I did leveling a bard or shaman, and I don't consider myself a "great enchanter" maybe above average at best. Runes/Bedlam line/AOE stuns/AOE mez make dying pretty preventable.
If you're in a group and you're 65% hasting your pet and giving them another 36% haste with Tola Robe + some proc weapons and standing 2 feet away from them then yeah you're probably going to die a lot, but there's no reason to do that when solo xping
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