What kind of visa is that? I know L1 is a popular non-capped option, but that is for intra-company transfers.
The H1-B has a lengthy application process, there is a maximum number of consecutive years you can be on one, there are more applications than availability, there's a transfer process, it is dual intent, and what else?
None of which are characteristics of the E-3, which is practically instant and infinitely renewable and expressly not dual intent.