The link and file sharing plus engagement analytics pairing makes sense for sales follow-up. I would show one concrete rep workflow: send a deck, see which buyer viewed which sections, then trigger the next action from that signal. That would make the close-more-deals promise easier to evaluate.
The photographer-specific workflow is a strong wedge: portfolio, client galleries, and business tools belong together for this audience. I would make the migration path from existing gallery/portfolio tools very explicit, since that is often the biggest switching friction for working photographers.
The always-on-top plus local storage choices are well aligned for developers who need quick snippets without another cloud workspace. The main thing I would test hard is predictable behavior across Spaces, full-screen apps, and keyboard shortcuts, because window management friction can make or break this kind of utility.