Not sure if you played live at 4.5 or are you assuming from the changelog but the issue is not hiram per se but the fact there is no need for anything else but hiram in 4.5+ getting worse incrementally from there, hence 4.0 made crafting gear really hard then 4.5 made it useless outside filling up some niche market for whales erenor's feed which in consequence killed most farm markets(after all, no one need to craft) which in return killed most of the alchemy profession and so on and so forth.
We are not saying don't bring hiram, we are just saying it need to be balanced because in its current official form we already know it will be a failure.
Seriously no one is taking guesses here, we as a matter of fact do know