The short answer is no.
The board doesn’t need a lot of power from the positive pad. Most of the current is expected to go directly to the LEDs and pixels. While it would be convenient to have several pads dedicated to power distribution, having the power go through the board would be a waste of power and space.
Sometimes it’s possible to solve this neatly by doing the splice on the other end. Like, if you have a power jack, you can solder two or three cables to it, and then you’re done. Most of the time though, you end up having to actually splice the cables, which is a bit bulky and awkward.
One of my favorite tricks for splicing wires is to take a single strand from a stranded cable, and wrap it around the two cables before soldering. This method makes holds the cables still and together while soldering, making for a very solid joint.
Another way to avoid some splicing would be to use some component of the hilt or chassis itself to carry the power. In the original graflex design (the flash, not the lightsaber) the tube carries the negative power from the batteries. This is also true in most flashlights. There is no real reason why sabers couldn’t do the same thing.