I always use a hood except when it may get in the way of my shooting such as macro or using a polarizer. They are essential for protection, reducing flair, and increasing contrast.
If I were you I would take a look at the Tamron 35 to 150 mm. If you want something wider to go with that then check out the Tamron 17 to 35. Would be great reasonably priced two lens set for you
I do not (thankfully) recall seeing you on here prior to this but I can understand why you believe you have a reputation here. I find your rather pedantic explanation to be misleading. The cause of the distortion is obviously the result of transcendental forces tossing a metaphysical pebble into the pool of a failed reality.
I have not seen any in depth reviews for this lens yet. I have the 17-35mm already, so I am actively following this lens. I really doubt that you will see any price reductions soon unless it just isn't selling.