Trident is a web-framework, like, say, Ruby-on-rails, but with some more "rails". So, it's designed to be serve as an engine to build upon and build with, so:

1. depends on module - everything is independent in Trident.
2. a bit too broad :)
3. That's the whole idea of a "framework"
4. Huh?
5. You will see combinations of everything - it's an open community after all.
6. Mobile is nice and dandy, but it's just type of terminal, which assumes a certain form of representation. see more Trident is a core. Mobile/cool/awesome/bad/flexible/unflexible/etc will depend on modules build on it, which will come in abundance.