I will always support the attempt at making something new from a classic Arthurian tale, but the bar is pretty high by now. Camelot, Merlin, Morgan and the Knights of the Round Table have been done and redone so many times that the source material is barely relevant anymore outside of a Literature classroom. It would have to be a truly unique take on the story to make much of an impression.
Sadly, neither feat has been accomplished, but I have to say “nice try” to Van Lente. He took several of the most important scenes from Sir Gawain and the Green Knight, captured some of the intensity, but none of the significance. The insertion of D&D and time travel into the adventure may eventually pay off, but for now, not so much.
The artwork, on the other hand, is quite good, capturing the point of each era and encounter, then setting the appropriate mood for each occasion.