I appreciate that you have taken the time to consider my position. I am sorry that you have taken offence at my reply.
The problem is circular in nature. If I had space, I might consider getting a drum kit in. The intention would be to learn my way around a standard drum kit. If nothing else it would be possible for drummers to join in a spontaneous jam at my house. I haven't got the space so a syn drum kit would seem to be an answer.
I agree that to learn in a way that would make the transition to a real kit less troublesome it would need to be set up, as you yourself suggested, to replicate the overall placement of a real kit thereby going right back to square one, which is to buy a full kit since the syn drum kit would need the same sort of space to set up.
I am now considering avoiding all of the trappings of analogue drums altogether (drummers always seem grumpy anyway) and I have wondered whether to replace my TR606 with a rack mounted synthesiser controlled by one of these:
Demo Vid
When did I say that I did not want an answer?
Have a nice week.