The limit I think used to be 300, now it's 50.
Would it be possible to up to to 250, which is the maximum you can get on a map (80v80v80 in WvW +10 dev slots). Aware the addon doesn't work in WvW, but ANet has never exceeded that limit.
I had it at 80 pre-update, and now it defaults to off every time I zone.