All Latin or world music requires a very strong groove even if it is slow. It helped my playing that way. Also when it came to soloing, I could not rely on my legato technique as much since it would not come out as well. Thus I worked on my alternate picking for a few months before the recording. Also I brushed up on my minor7b5 and diminished lines since these are used quite a bit in my soloing over these types of progressions.
Technique is like vocabulary.
You can still say a beautiful and meaningful sentence using simple words or you can express the same idea using complicated words. I don't thing the words you use to express an idea are as important as the idea itself. In the case of Synesthesia, technique is important but not essential. In my opinion technique is a tool to express your ideas. It's not the only tool but in a superficial way, it is the most impressive one.