Working on a large project rebuilding a complex web application that currently lags well behind the competitive offerings. Stakeholders are keen to go 'scorched earth' on the approach i.e. lose all (most) old/dated design metaphors in the name of simplicity and user-centricity. Essentially build a new app.
At this stage we have a number of relatively mature personas, detailed scenarios, and a core feature set. We have a high-level value proposition, and some design guidelines roughly based on that.
We also have some "interface inspiration", i.e. some example of existing tools that closely match or required functionality, so that we avoid reinventing the wheel where possible.
Is there a generally recognized way to move from where we are now to the wireframe stage?
Do we just start throwing stuff down on paper and develop an internal system of iterative feedback?
I've just not been at this stage a of project like this before, and would appreciate any experience-based advice.