I fail to see the appeal of such basic traps.

And when it ups to me I would give Rogue's a 100% chance to detect them.
Cause they are Rogues and traps like those are what they would look out for all the time.
Probably even mistaking a normal ventilation-system for a possible trap.

Warlocks have a 100% chance to detect them currently.
Just summon your Fiend over and over until one of it detect them.
The traps are just time consuming and hinder me from doing what I want to do. -> Continue to discover and adventure.
I can cope with it of course.
But I really wish my Rogue would have a 100% detection chance.

Safes me the time to "summon-scumming" the traps into visibility.