I do something similar, but I don't solder the wires. Have had decent luck doing it that way over the years.
I've always been told that soldered wires inside a crimp will fracture sooner than a bare wire crimped, and also conduct heat faster.
This subject has been debated for ages and will probably be debated long after I am gone. Another thing I've seen done that works but doesn't look as neat is to splice 2 wires into 1 wire, heat shrink it, and then strip the end of the single wire, and crimp a connector to the single bare wire.
I know what you mean about the crimping solder that's why i solder again after crimping. the solder will and does fracture when crimped. there are always going to be advantages and disadvantages doing it this way,
The method you have described is also an excellent and neat way of doing it.
