I'm getting a bit of a disconnect from the question. You're feeling that the techniques are rushed, but you also want to get to your next rank faster? If you get there faster, they'd be even more rushed.
It takes a certain amount of time from learning a technique to actually being able to do it, and while repetitions are a factor, it's my experience that there's also a fixed time before you can really start to understand something (incidentally, I've noticed the same thing for learning languages). I wouldn't expect doing any number of repetitions to accelerate you past 2 weeks for getting a decent grasp of the basics.
That might suggest that you could cram everything into a 2-week intensive course, but there's also a question of existing physical ability. Are you actually fit enough to do 2 weeks straight of endurance work? The other issue is that unless you're talking something like boxing (and are ignoring the importance of footwork), the technique selection is broad enough that if you try to do everything there's no way you can fit enough reps for all of them into that 2 week period, and you can't really handle too many different things at once.
When I teach, I'll introduce something and it won't be understood very well, then I'll bring it back in a few weeks later and it's understood better. By the third or fourth time I go over it, usually 4-6 months later, it gets understood well enough for me to say they have a solid grasp of the basics. I'm teaching a group class 1/week though, so if you jump it up to 3/week you could expect significantly faster results, but the fact remains that most people don't really understand something the first time they're taught it.
Ultimately, if you're looking for faster results, lift heavy weights to train your strength. Technique is a force multiplier, which means it depends on the initial strength you have to apply force. If you're physically stronger, you'll reach a minimum level of competence faster. It doesn't mean you're going to be technically all that much better (although I'd suggest it helps a little bit), but if you're looking for fast results, that's probably all you can hope for.