Honestly, a 3.x relic weapon is far more of a grind and work than a savage weapon, ESPECIALLY Creator Cycle when you really sit down and think about it lol.
Unless you don't have the time, group, or ability to do savage content.
Also yes, 3.55 will have an upgrade phase along with being able to upgrade Shire weapons since it's supposed to be the weapons you go into the next expansion with (that will be obsoleted by a store vendor.)
I hung onto my zeta weapon until like level 58 or something like that. Including the progression I did with it at the end of the 2.x cycle, I'd say it put in fine service.
tl;dr if the final upgrade of the relic is equal to or more powerful than the current strongest weapon and its upgrade comes first then its NOT extra work. If alex savage weapon difficulty to get gets nerfed or becomes MUCH faster or easier to get (i.e purchase items can be gotten from 24 man raid), BEFORE final relic upgrade is available THEN doing the relic is/was extra work.
As you could just waited til savage weapon attainability (or tome upgrade item attainability) got nerfed/easier than taken 30 mins to get that instead of spending the 10+ hours total you spent on making the relic weapon from start to finish
Ok but then why are you playing the game at the launch of an expansion when there's going to be a new tier of gear 6 months later? And then another one 6 months after that? If your only goal is to have the best items available, then you're better off not even purchasing an expansion until the final patch is released so you're not "wasting your time" on the lower tiers of content.