I have already talked about how I think that all the deep stances are simply for beginners.
And, as been said, you're not correct on this one. Sure, if one's aged physique prevents him from standing in lower stances, it's fine to use higher stances. However, low stances in kata are there for purpose. Omitting them would simply mean that one doesn't really know his kata. In free fighting, though, only the principles (learned via kata) should be present. That's the whole idea of kata-centered karate (i.e. traditional karate that aims for fighting skill, not for competition).
Another thing that I think have been lost is the principle of Kobo Ichi, this means attack and defense as one.
It hasn't been lost and it's present in many kata and is trained in both bunkai and oyo.
This was a big debate when I trained Karate. I claimed that the typical Block on one and counter at two is for beginners, beginners should execute the motion in one motion, ecaxtly like in wing Chun and JKD.
The whole "this is for beginners" and "this is for advanced" conversation is more than a bit misleading. There aren't, actually, anything that is "for beginners" or "for advanced" in terms of fighting. There are only principles that work in certain situations and others that don't work. Sure, one thing is learned earlier than the other, but this still doesn't make anything a "beginner's" principle. Generally, things that one learns as a beginner are the most important, most foolproof things that need to be both mastered first and carried with one for the rest of the path in his chosen discipline.
Funakoshi wrote, in the beginning the block and counter should be two motions, to make sure that the Block is strong and exact, and the counter is the same. he then said, the moment the two motions are learned there shouls not even be the slightest gap in between them both.
This is one of the things that don't open at all from the text but are self evident when training the traditional way. This isn't an any kind of revelation.
To be this means that the typical ipponGuimte with Jodan Age Uke and Gyakutsuki counter shouls be executed simoultaneously and not in to motion, and from a high stance of course, not from Zenkutsudachi
Actually, no. If you're training ippon kumite, you really should be doing the basic forms and basic techniques. Why? Because ippon kumite is a form of kihon kumite, basic partner work, and the principles one gets introduced to are the basic principles, studied in an exaggerated, overly simplified way. The way you described can (yes, can - if it is appliable) be used in different forms of oyo and jiyu (ippon) kumite.
Take something like Iken Hisatsu, the typical One punch Kill, to me this is simply mental, not meaning that there should be only one counter in for example Ippon Gumite.
Agreed - and probably no one takes it literally.
Even the Longest Combinatio is to me Iken Hisatsu, you simply strike each punch as if no more punches are needed, To me it does not mean that you only need one punch, that one punch is what karate/Budo is alla about.
Well, karate and budo come from entirely different backgrounds but yes, basically, this is the general idea.
These are only my observations on Karate. I trained Karate for 7-8 years in the late 80's to mid 90's. After receivig my Black belt I got so tired training in deep Stances, doing one-two rhytm in dfense so I moved on. When I started training JKD I found all the principles I have read in Karate, the applications were done the way I had interpretadet them
This pretty much sums it up: Your teacher didn't know his art and thus couldn't deliver the idea behind the training method to you. This isn't rare by any means and is one of the greatest problems of karate in general.