Flavourful clues for ACDC and SEGA! For HERA, indirect anagrams are considered non-Ximenean, but it's up to the setter to decide whether they're fair game or not.
I've been pondering this for a while on my stance towards indirect anagrams. I think that for my cryptics that they're fair game depending on the situation such as the length of the clue/answer, the commonness of the word, etc. I don't plan on using them super often, but if I feel that without it the clue would be a "gimme" then I'd employ it.