Between the way they handle the 30 pre draft visits and having this press conference, it’s not hard for teams to figure out what they are thinking. That’s my main point. Either just lock the building don and shut up or throw a bunch of misdirection in there as well.
They didn't only bring in one position, and frankly there is no certainty they will draft any of the players they brought in anyway, even if available. It's not that uncommon to find that a player drafted in the first round will say he was shocked at the team that picked him because that team wasn't one that brought him in or really had much discussion with him. I seem to recall Byron Jones saying that, but I could be wrong.
Locking the building down wouldn't do anything. Other teams are talking to these players too, as well as their agents, and to each other, and the media is around every team as well. Visits aren't going to be secret