I think most of the 2.x primals can be cleared unsynced really easily so I'm not sure if it's still some sort of challange as a relic step unless you have to farm for a certain token or something.
What I would really liked them to implement though is a minimum ilvl sync challange as relic step as in clear Westwind/Chrysalis/Gilgamesh. Could extend to the primals though minimum Titan hm will receive the same amount of hate as it will be back then which is a bummer... I'd rather get a clear instead of having to grind for 80+ tokens though all day... and I'm quite the casual player.