I was so close to promoting to Silver today but after getting within 20 ranks or so, which is one or two wins away, I then went on to lose a couple straight and end up at around the 800+ rank which is more than a hundred ranks away.
I think it is a fair assessment of where I am and promoting early would mean a couple of very tough days ahead in Silver even with some sort of an ELO matching algorithm.
Today, I used Bortus a lot more than I normally do and I won quite a few battles with him. Even more than with Kelya Frendul, even though I thought Kelya was a better summoner.
At least I got some card rewards after two days in a row of credit rewards. Looking forward to opening multiple chests once in Silver and of course, to not have Credit rewards.