The biggest change is what we use for the glans now using a permanent filler there.
In the shaft I rarely use an injection to give an erection, Dr Danh in Melbourne mostly using Ellanse will often give the injection half way through the treatment.
I treat so many patients with an intact foreskin that I am more confident going further into the foreskin now than when I started. I more routinely get guys to use Cialis (a long acting form of Viagra) both pre and post treatment. Those would be the main changes