I haven't tried midrange sajj after the expansion. I did tried after siphon nerf, and it was the worst experience ever. Losing to things that had no counterpart, it was like rock, paper, scissors. Couldn't answer stuff like kelaino, four winds, rot9m, bloodmoon etc. I can post the deck list if you want, just note that it's not that good because it doesn't have good answers to ranged threats.
I tried rashas, tigers, conduits, ankh and even silhouette tracers. Most efficient ones are tigers, sunset paragon and conduit. And with tigers I slotted in second wish long with sojourner for draw and dioltas as 4drops for the synergy.