Startup Idea: Collaborative Design Toolkit for UX/UI Designers

Startup idea to develop a comprehensive toolkit for UX/UI designers. It would include features for brainstorming, whiteboarding, annotation, and creation of lo-fi artifacts, all in a collaborative environment to improve team interactions and productivity.

I work as a UX/UI designer for a software development company. We have a medium sized (14 designers) team and collaboration has been an issue among the team.

As an experience designer, it is important to start in a strategy phase of design. A comprehensive tool that allows for brainstorming, whiteboarding, annotating, and creation of lo-fidelity artifacts would be very helpful.