I think it is a bad idea to leave out Kindle customers and limiting to Fire platform only. It seems like a step back. Why even have Kindle app if the content is not there for magazines.
I've started canceling all my magazines just because they are not jumping on the digital bandwagon... Bye-bye Wired... tootaloo Detailed, sayonara PC Game mag... (shame on the first and last since they are tech related mags)
[Edit...5minutes later take the PC Gamer comment back]