To be honest, I think Taylor is the QB Wilks & McCoy may target in their statement to re-tool not re-build. Taylor is mobile, accurate and efficient. His $19M salary seems to be in line with QB's of his caliber after the Bortles signing. Depending on what BUF decides to do, I wouldn't be opposed to trading for him as I think he will be cheaper than Nick Foles. Maybe ARZ wants Cousins but he would have to want to come here and the money he would cost would prohibit ARZ from improving the OL with veteran help.
Right now I think ARZ's options are: Cousins, Foles or Taylor. Unless other teams end up making surprising cuts or trades, those 3 are it.