dancingalone
Grandmaster
The Kukkiwon has similar nuances to kicks and strikes, but that doesn't make it complicated. When I said 'complicated' to Twin Fist, I was speaking of the complexity of individual techniques. A side kick is not complicated. Getting it right and and doing it well takes practice, but the mechanics are not particularly complicated. Most kicks that are difficult are difficult because they require a degree of athleticism that is difficult for most people to attain, but that does not make them complicated.
How the techniques are integrated into an overall fighting system is where the complication comes in. Stances, footwork, range, compound movements, tactical preferences, all acting together to realize a specifically taught method of fighting. In contrast, any single technique practiced in isolation can be regarded as simple. Anyone can do a sidekick in the air. On the other hand, can anyone maintain correct distancing in order to snap out an effective piercing side snap kick to the floating ribs when an attacker is bearing down on you with a wild attack of his own? This is exactly the kind of performance outcome that requires targeted training as well as seasoning that only comes with time to pull off. Add in a throw or a pin and you've increased the difficulty of integration by an order of magnitude.
Depends on how you structure the curriculum. If you have punchy kicky in colored belts and don't introduce throws and locks until first dan, then there would be little difference. However, the average time to BB in hapkido from feedback that I have received is that it is pretty much in line with what is seen in taekwondo; two years on average in the states. I could be wrong, as that is feedback that I have personally received, not hard data. But given that hapkido actually has more kicks than TKD, I don't see where TKD with some grappling would be radically longer to first dan.
The hapkido I am most familiar with is that practiced by some people who are in GM JR West's group. They practice his curriculum and admittedly do some local stuff as well. They teach both throwing and locking techniques as soon as the first colored rank is achieved (yellow). They take about 4-5 years to promote a consistent student to chodan. That 5 years thing seems to creep up an awful lot.
IMO TKD with grappling should be taught similarly. You introduce the idea early on - the student doesn't have to be immediately proficient - otherwise you might end up with students who have a clear preference for striking and the medium to long ranges.
Well, if dan grades go up to ninth or tenth dan and it takes over thirty five years to get to ninth and over forty to get to tenth dan, then it really doesn't matter what you think TKD ought to be; first dan is still very early on in the grading structure, even if it takes you six years to get there. From first dan to sixth dan, you are looking at approximately fifteen years of training. So regardless of what you are including in taekwondo, I consider first dan to be a beginning dan. You used the term, "Chodan" above. Does not chodan mean 'beginning dan?'
Forgive me, but you're really looking at this through the KKW lens too much. There are TKD styles that have more material front-ended, where there is not any new technical knowledge or curriculum after 4th dan or so. I'm approaching this from a general TKD perspective where I'd rather see visible differences in even the brown belts from the purple belts and focused sharpness when comparing the chodans to the red belts.