Some coding things we need in our engine..

Here is my sort of brainstorm for some of the coding aspects we should pay attention to:
– MVC setup
Best coding style now I think, very organized, and works well with only one directory in the webroot.
– Cacheing System
vb4 as many have already noticed is SLOW. We need our engine to be quick and light. We can do this and still have tons of modules/widgets running by caching all the data. Modules/Widgets will have a function that runs that takes the settings the admin set and caches the data thats needed that way data can be pulled with only one query