Actually, there already is a getForm() function. I've also included a FormManager::Html component for people who just want a quick and dirty way of making a form, or want to include arbitrary html between the fields.
On the Date component - the plan is to make it have options for begin/end time (only show 2001-2010, for instance), different date formats, etc. Eventually I'd like all components to be as flexible as possible in terms of how information is handled, but as far as the actual display goes, I'd like to force the user to use stylesheets. Right now I'm still working on fleshing the whole thing out (radio buttons aren't implemented, for instance).
On validation - right now the default is to display errors if validation fails. It's pretty basic right now : "Field : 'Car Speed' must be a number". Errors are displayed in red at the top of the field. There's also an option to suppress them or simply retrieve them as an array if so desired.
Anyway, thanks for the feedback and suggestions.