I'd prefer that Steve isn't invited to Themyscira. He might end up there now and again, but it's something that should be used very sparingly and in extreme situations, and preferably when most of the Amazons weren't around (see how Rucka used him on not-Themyscira in Rebirth, or Simone with Tom Tresser in her run).
There are two reasons for that. The first is that I want to maintain the idea of Themyscira as a safe space for women. And part of being a "good ally" (which modern Steve is supposed to be) of a marginalised group (which women are) is to respect those. The second is a narrative issue. If part of Steve's arc is to become "naturalised" to Themyscira, then we suddenly shape the narrative arc of the Amazons so it follows Steve's arc. And the only character arc I'm ready to place on a level where it is allowed to shape Themyscira is Diana's.