Logias since time skip: Caribou, Ceasar, Smoker and Monet. All of them were no match for CoA users.
Maybe Ceasar could wipe some of them out, but I think that would be the weakest members. Logia is only good against fodder, which I hope will change soon.
Logia's are only good against fodder if the user sucks.
You would not expect anybody to rely solely on their power, and that's what most of logias did… well, maybe not Smoker, but he is just out of luck and always has been.
And yes, we have War as precedent, the weakness to haki can be overcomed.
So I think you are painting a bleaker picture then it actually is.
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@.access:
Problem is in NW pretty "some people" actually becomes "almost everyone".
And being untouchable was a logia's greatest strength, so it's easy too see why they look much weaker now. Without the said ability, they are almost reduced to "shooting elements" and that doesn't sound as impressive as "turning anyone you touch into a toy bent to your will who is erased from everyone's memory".
I think the problem lies with Paramecia Fruits being more broken recently, not necesserily with Logia's losing their untouchability in some cases.