In my opinion we should eliminate shared data formats as much as possible. Instead, try to define the core of this distributed system in a minimal way, perhaps

In my opinion we should eliminate shared data formats as much as possible. Instead, try to define the core of this distributed system in a minimal way, perhaps it only needs an inter module messaging system and a module naming system. All other services are not standard but just modules. So something like the browser is replaced by a micro-kernel style program and all other functionality is in outside processes. Each 'program' has a unique name in a global namespace - they are are downloaded as needed and instantiated. The programming paradigms and stacks of each program are not prescribed. Programs instantiate other programs by the global name as necessary, etc.