@David Ivy, I like your way of doing. Although not quite reaching the perfection of the GOTM winners your builds have character. Most importantly you seem to be getting the crucial measurements right! A well playing guitar is what matters, not fancy woods or stellar finish. A neck that fits your palm, fret ends that don't take your DNA, perfect intonation and low enough action, that's what really matters. The rest is eye candy.
Adding purple to cure the blotchiness was a good idea. Further, using the same solvent as the dye has (water, alcohol, whatever you've been using) you can wash the lighter areas for a better blending. Sanding back is one method, washing back can be as efficient without the risk of going too deep.