Those of you who have trained with me for any period of time know that I STRONGLY believe in simplifying the training process. Just because you "know" 24 counters to the Cross means that you can pull off any of them when it matters. Most martial artists spend way to much time developing skills that either have very low probability of being successful or just look "cool" to do. Think about what you are practicing and determine if it is going to benefit you in the long run as a martial artist or is it just an extra piece of "fluff" to add the mix.
I think applying the "80-20 Rule" is more reasonable, especially when your butt is on the line. (NOTE: if you don't know what the 80-20 Rule is look here.) So that means that you should be spending your valuable training time on things that are going to actually pay-off for you. This is doubly true when it comes to your conditioning time... quit screwing around with the bench press and grab a couple kettlebells instead; you'll thank me someday. This also means that you should be looking for this that you can do that have a broad application as opposed to a narrow one.
My baseline philosophy in training has always been to make it as simple as possible - but being simple doesn't mean it's easy!
The following video show Erik Paulson "schooling" the interviewer on the similarities between the Kimura and the Toe-Heel lock.