That's because the DC editorial staff are still divided on Hal and Kyle. And worse yet, they kow tow to the demands of creators like Alex Ross and Kevin Smith who demand that they be allowed to use their favorite characters if DC wants their work. If the DC editorialship would all be on the same page on how to use Kyle there would be as much debate on Kyle as there was with Wally vs. Barry. I swear there was less debate on Connor vs. Ollie than there is Hal vs. Kyle.