Most unlikely, since fetching the collection info requires a new request to the server (this is just how the indexers work, nothing to do with Alt.Binz). So if you have 500 search results, what you're asking for is Alt.Binz to make an extra 500 requests, automatically ... for each search query. This would no doubt quickly get Alt.Binz and/or your IP banned from those websites for excessive usage.
But ... one thing that might be handy is if the + just shows automatically when the Fetch Collection Info option is available for the result, but Alt.Binz only does the fetching when it's actually clicked. This would save a right-click, and be pretty transparent to the user ... I think. Perhaps this is what you meant?