Balancer ratios/counts

As balancers already support equal in/out ratios it'd be really nice if they could be able to support a more controllable ratio or count. With items like assemblers or crushers that support multiple production types that configuring belts to a site with three input ports but with four or five input items is painful and results in a halt in production.
Thanks.

Agree, perhaps in the balancer window each input/output could have a number field instead of (or in addition to) a "priority" toggle.
For example, one I/O assigned a 1 while all others assigned 0 would be the same as today's "priority". All set to 0 (default) or the same number results in the same as a newly-placed balancer without priorities set.
Whereas, three outputs given different weights, say set to 1, 2 and 5, the first would receive 1/8 of the output, the next 2/8, etc.
This way, situations where you want a priority but do not want to cut off another output entirely (without stringing balancers in series) would be possible.