>>67
I read it now. I can say I mostly agree with what the author has to say, but there is a solution to this. It's called writing a standard document and implementing it. This is how you have many standard-compliant Common Lisp implementation, a lot of R5RS and quite a few R6RS compatible Schemes. From those CL implementations, most have their MOP support (which is again defined in a standard) and gray streams (which is defined in a separate standard). As long as you're willing to define a well-thought-out interface, people will implement it (however, having a refrence implementation would be very nice as well).