I think the reason they don't have a line is not because the sets particularly from that trial would break PvP, but because perfected trial sets were introduced in the game in next trial after MoL (which was Cloudrest with the Summerset update), so MoL and the original Crag trials are the only ones which don't have perfected versions.
The only ones that were retroactively added were the vMA perfected versions, I don't know why they didn't revisit the Crags/MOL (maybe because at the time there was a big outcry from people having to rerun MA?)
The only ones that were retroactively added were the vMA perfected versions, I don't know why they didn't revisit the Crags/MOL (maybe because at the time there was a big outcry from people having to rerun MA?)
They already explicitly consider certain Crag sets to be the “perfected” version of others, and they already had the opportunity to revisit them but chose to use them as the standard instead:
https://forums.elderscrollsonline.com/en/discussion/537057/pts-patch-notes-v6-1-0:
False God’s Devotion
“Removed the extra 5 piece bonus of Spell Damage on the normal version of this set, and the extra 5 piece bonus of Magicka on the perfected version, to better mirror the power [sic] Vicious Ophidian as the perfected version of Quick Serpent.”
That was their reasoning for removing False God’s extra stat line compared to VO instead of buffing VO to be as powerful as FG. Since they already consider VO perfected in its power, they saw no need to increase it.
VO and PFG now read exactly the same except for the resource they return and reduce costs for. (iirc, the missing P means VO can’t drop in nirnhoned, while PFG can, but that’s not ultimately a power issue, as VO can be reconstructed in nirn.)
The only ones that were retroactively added were the vMA perfected versions, I don't know why they didn't revisit the Crags/MOL (maybe because at the time there was a big outcry from people having to rerun MA?)
They already explicitly consider certain Crag sets to be the “perfected” version of others, and they already had the opportunity to revisit them but chose to use them as the standard instead:
https://forums.elderscrollsonline.com/en/discussion/537057/pts-patch-notes-v6-1-0: