I have drawn liberally from Eastern and Western sources to arrive at where I am today. While I do prefer the Japanese/Zen-like landscape thru which to deliver my syllabus, it is not at the cost of sacrificing simplicity/functionality, common mechanics and immutable principles.
I discovered long ago that there was little, if any, systematization of what is presently called karate in Okinawa's old Ryukyu Kingdom. More disappointing even was how plebeian it appears to have been. Plebeian or not, I worked the door of enough Canadian pubs, night clubs and watering holes to know what brutality can produce, and it doesn't need to be systematized to get the job done. That said, what I did discover during my lengthy [China/Japan] field studies, which was certainly more comforting, surrounded evidence that as many as five different fighting arts had been practiced in Okinawa's old Ryukyu Kingdom Period.
For those interested, this is how "I" see it [historically]:
1. Ti'gwa: The plebeian form of percussive impact [referred to as "Te" or "Di"] introduced to Okinawa from the old Kingdom of Siam during its early period of inter-cultural commerce.
2. Kata: [Hsing/Xing in Mandarin Chinese] Southern/Fujian-based solo quanfa [principally crane, monk fist & SPM-based quanfa] routines used as forms of human movement developed and popularized by the Chinese as ways of promoting physical fitness, mental conditioning and holistic well-being.
3. Torite: [Chin Na/Qinna in Mandarin Chinese] Shaolin-based methods of seizing and controlling once vigorously embraced by law enforcement officials, security agencies and correctional officers during Okinawa's old Ryukyu Kingdom Period.
4. Tegumi: Originally a multi-faceted style of fighting dating back to the time of Tametomo, the discipline is believed to have been derived from Chinese Wrestling [Jiao Li; from which comes Shuai Jiao; --- name est. 1928]. Tegumi evolved into a form of grappling and finally became a rule-bound sport called Ryukyu Sumo.
5. Buki'gwa: Sword, spear, bow/arrow, halberd, shield, knife, cudgel, & truncheon, etc. [The latter two becoming the principal tools of domestic law enforcement following Okinawa's 1609 prohibition of weapons.]
Even though my principal interest is, and has always been, KATA [its origins, evolution, theory, and principles of application practice] it was based largely upon the five different fighting arts idea that I went on to established Koryu Uchinadi Kenpo-jutsu [although there are influences from various other sources...see my web site for more].
Even if what I am doing isn't "right," I am absolutely certain that it is far more in line with the spirit and aims of the original Okinawan pioneers then it is with the conceit associated with one's "style" being the ONE & ONLY CORRECT WAY!" If it isn't, too bad --- I am happy with what it and it works for me.
KU Core Application-based Practices
[Performed in systematized two-person sets]
#1. Giving & Receiving Percussive Impact: Uchi/Uke-waza [29 techniques]
#2. Dealing with the clinch/Tegumi: Kotekitai, Kakie, Ude Tanren and Muchimi-di, etc. [36 techniques]
#3. Joint Manipulation, Cavity Seizing & Limb Entanglements: Kansetsu/Tuite-waza [72 techniques]
#4. Chokes/Strangles-Air/Blood Deprivation: Shime-waza [36 techniques]
#5. Balance Displacement: Nage-waza [55 techniques]
#6. Ground-fighting & Submission: Ne-waza [72 techniques]
#7. Escapes & Counters: Gyaku-waza [36 techniques]
#8. Kata: The classical mnemonic mechanism through which fighting principles are culminated, preserved and transmitted [54 routines]
More here for those interested ... http://www.koryu-uchinadi.com/Koryu_Uchinadi_Curriculum.htm
Thanks for your interest and happy to respond to your queries.