[Tachyon-list] Bootstrapping and changes of object representation

I am not completely clear on the bootstrap process and would like your opinion on how best to support the following scenario:

Let's suppose we boostrapped tachyon and it is currently running independently. Let's say I want to change the object representation of the Context object and/or the javascript objects and end up running in a new tachyon system with the new representation being used.

What should I modify with the current system? What is the process to go from the current system to the new one? Is it mandatory to generate a new image and restart anew? Would we want to support dynamically changing the representation used by the compiler while it is running?

Erick