Stop the whining about Open mode. If you don't want to take the chance of getting wiped then play in Private or Solo and leave Open the players that can handle it. Personally I don't mind running into other players in Open and testing my metal against them. Isn't that kind of the point? To interact with other people you don't know? If FDev makes it hard to distinguish live players then that all goes away and you basically have another version of Solo mode.
1) I find it best not to address the Open mode #@$!-show (full disclosure: I'm open only, unless I'm making avatars for people, or ship pics for the wiki)
2) While I disagree with having non immediately identifiable players, there is a conversation on having a cloaking device. Just set limits, like timeframe (works for 20 seconds or less), heat can disrupt it (shorts it out), cancels upon scan (duh).
Tweaked, it's not a terrible idea.