Can't post any pictures because my rewire will be a winter project. I've been giving it some thought though. Just like you I feel a need to re-engineer things to clean it up some.
I think I'm going to use a terminal strip (like the one on the back of most people's motors) to jumper power and grounds off. Just run power to the first position on the strip and jumper to the next three or four spots (same with the grounds). That way you don't end up with a bunch of leads soldered together in a splice pit. You'd have 3 or 4 nice spots to pick up your power and grounds from.
I think if you take your time, it will turn out to be a nice clean installation.
Currently all my wires are run point to point. I have no terminal strip anywhere. Although it's always functioned, I have to wonder about the integrity of the wires/connectors. I've redone most of the connections at one time or another, but some of the leads are getting pretty short in length, and I hate splices.............
Being in the electronics game for 16 years, I've seen lots of problems attributable to bad splices.