Yes, you are right there is overhead involved. In our tests, however, the delays didn't end up being too high for users with up to 125 friends (even on mobile d

Yes, you are right there is overhead involved. In our tests, however, the delays didn't end up being too high for users with up to 125 friends (even on mobile devices). Delays will be worse beyond that, but will have ways around it if it comes down to it. Will be a good problem to have :)