Privacy & Protecting Updates on 'Nearby' Timeline

I elected to protect my updates on the Twitter network but after a day of using Twinkle (which, I adore by the way) I find that if 'Broadcast Location' is on, ALL my tweets appear on the 'public' Nearby timeline.

I realise that this is in effect, a different network to Twitter - but this is something I only found by searching support.

Are there plans afoot to honour the 'Twitter' privacy? (or just simply, to give the option for privacy?)

I love the location awareness but only want people I've allowed to follow me, to see any updates (and my location).

Last response I saw was 'we're looking at it', but this was 4 months ago..

Fingers crossed - I'd hate to have to leave Twinkle!