You misunderstand the fix they applied to enochian. It applies to the ability itself, not the time increase from blizzard 4.

Before the fix if you used enochian while it was still up it would only refresh the duration to the next tier. So if you used enochian, refreshed the timer with blizzard to 25 then again with blizzard to 20 then again with blizzard to 15, then with enochian you'd be stuck at 10 seconds on enochian but a full minute in the recast.

Now in that same situation enochian will renew to 30 seconds whenever the actual ability is used, but when refreshed with blizzard 4 the duration reduces as expected. If every blizzard 4 refreshed it to 30 seconds blms would be nerfed pretty quick.

That being said, I would like to see fire iv activate firestarter, and freeze repurposed to be a strong single target ice attack with a cool down if we have a lot of time on enochian but no more mp for fire spells.

I agree that the nerf to flare was poorly thought out, especially when paired with all the buffs to aoe damage that summoner got. I think the real answer to blm's aoe is to drastically reduce the tp cost of aoe skills on other classes. Drg in certain situations can pump out a ridiculous amount of aoe damage they are just severely penalized afterward if they don't have time to recover. Same for
Monks. And their aoe abilities are not strong enough to warrant the restrictive cost of use.

I don't want them to change atherial manipulation, though I'd like to see the nerf to mana wall reverted, even if it just absorbed one hit it would be more useful than it is now.

I'd like to see lethargy be more useful, sleep also, but I think that would require a drastic shift in the development dynamic. Right now they clearly don't want to balance difficult content for debuffs. Until they do these abilities will largely be useless beyond open world content.