We were working on ju-ippon (sorry for spelling) last week and we progressed onto any attack any counter. Now one of our BB's who is very good took this as any Karate attack and counter but i took it as using what I have learned and then using it to suit. He come at me with a punch at jodan and my counter was to bock then hit swiftly hit him and lift by the groin. He switched on very quickly and for my attack of a kick to the knee he took me from the game with a side step and strike to the throat (with control). We continued with me blocking his punch and using inward rotationand my body weight taking him to the floor whilst striking the back of his neck. I enjoy the practical dirty aspect of training as it shows for me anyhow that Karate may have lots of moves in essence you can get by with real Karate basics if you apply them correctly.
Derek we often have a session where we start with strictly controlled randori, progressing on to a mix of quite and randori. We then crank it up another level where on command , anyone may attack anyone else, resulting in a melee. There is no need to get by on karate basics. Basics are just the manifestation of a set of principles which, when applied freely, are an effective, combative system.