The coriander bitters and saline sound like great additions, will definitely be trying that next time. I was thinking of it almost like a (very distant) negroni cousin, I use the 1.5:1:.75 ratio for my negronis as well.
Would have been far too sweet at 1:1:1. I did .5 of the corn liqueur and even that was pushing it, but tasty nonetheless. I'd guess 1.5:.75:1 is fairly balanced.