These still aren't really requirements. I was thinking of something like "handle customization of system functions for individual customers in a way that minimizes our work." Assumptions about using multipe servers, remote methods, etc. are all design, not requirements, and they are affected by your choice of platform.
You talk about code generation as a way to achieve ease of maintenance and avoid "quirky" behavior. In general, code generation is pretty confusing and error-prone, and often makes maintenance harder.
Then you're talking about remote method calls, without any context for why they have to happen. Your first goal should be to eliminate as many remote calls as you can, since they will slaughter the performance of your system. If you do have to do something remotely, that still doesn't mean you need AUTOLOAD (another rather quirky and error-prone feature). You can do this sort of thing with proxy objects, or various rmeote method call systems that different platforms supports.
I don't know enough about your system to give you concrete advice, so all I'm really saying is that deciding you need functionality along the lines of AUTOLOAD before you have chosen a platform seems backwards to me and implies that you really have chosen a platform already in your mind.
