Maybe not for one of the first few rebirths if you’re not that big into mining, but personally I think the Hephaestus rebirth is a great challenge, and offers a reasonably good reward, even if you’re not too keen on mining yourself, being able to purchase the ‘Trench’ enchantment can be very useful, especially if you want to sell the books for mana, or use it yourself.
Trench, I think has been controversial in the past, but with the fairly recent update to it, I think it’s definitely in a much better condition than it was at the start of the season. I understand it’s time consuming to get to mining level 75, but if you’re up to the challenge, I’d say go for it!