Option to send to different indexers per campaign

Can you please add a simple option in the campaigns so that you can specify which indexer in your list to send the verified links to.  IE, a dropdown menu in the campaign options with the option to send links to the first indexer in your list, send to the second indexer in your list, send to the third or send to all.

This way we would be able to send our tier 1 links to a higher quality indexer than our tier 2 and 3 links

It's on my to-do list