Hi John,
If you don't mind me saying fella, I think you are in danger here of getting carried away by too many good ideas, all of which you want to give a try next time out, which is doomed to end in total confusion. As you say, there is no one wonder rig, any more than there is a wonder bait. Ask a dozen anglers what rig/bait they swear is the best, and you will get anything up to a dozen different answers....they can't all be right (or wrong) can they?
It is quite normal to hear some great anglers state that they were suffering hook pulls while using rig A, so changed to rig B...end of problem. On the other hand, another started with rig B, but was suffering hook pulls, so changed to rig A....end of problem...
Bit confusing that isn't it, if you see my point?
In my opinion, providing you are using a decent, proven bait, presented in an acceptable way, with a sharp hook (vital), and all the rig components and other tackle in ballance, there shouldn't be a problem. Choose a proven rig which is matched to the river/conditions you are fishing, from one of those on offer from the excellent anglers on this forum and stick with it, and you won't go far wrong.
Continually swapping from rig to rig, hair length to hair length, or bait to bait is pretty well guaranteed to result in less fish on the mat. On the other hand, the confidence gained by KNOWING that the rig, hair length and bait you are using has been proven to work on YOUR river (or similar), by a successfull angler, is absolutely priceless.
Cheers fella, hope something works for you
Dave.