The 4 send slots are there just for backward compability!
If you have a problem with using more than 1 channel, i suggest you use colors.
But like stated, no need for senderella, stream boy or anything else. And how on earth does senderella or anything else knows in what order the channels are mixed?
In FLS you can't feedback-route, and that also assures that the mixer does mix in the right order with no delay.
http://filexoom.com/files/613/temp_stuff/Routing.flp
Just play song.
You hear and see a lead that is going in Chn11 and some eq applied.
It then routes to chn 12,13 & 14.
12 is dry
13 is reverb
14 is delay
13&14 now goes to 15 (acting as a sub-bus)
15 is here really just for showing off.. really no need!
No problem, is it?

