I hate my DPS being measured by others as much as reviving DPS-fixated people. I would like to exclude them from joining my parties as I like to stay away from their parties.
With the hacker-ban wave ANet has shown that it can easily recognize such users of third-party software.
I propose that DPS-Meter user are flagged as such easy visible in game, and that LFG-tool allows you to set a flag that keeps such people out from joining your party.
Mainly I want a flag like on the google glasses: This person is recording my behavior and violating my privacy.
Edit: Result of discussion:
ANet should make an option in the setting that everyone can switch at any time:
This looks like a quite perfect solution for that situation.