[iheartmemcache]

I can think of a bunch, mostly all revolving around replacing Visio and OmniGraffle. Exposing an API service shouldn't be too difficult considering the fluent style you modeled your own internal API. Make that and/or allowing people to upload their own stylesheets a premium feature. Having two panes like this[1] where I can declaratively chart things out, and have you take care of the styling and I'd be a paying customer. and/or having some aesthetically pleasing UI right out of the box would make this my go-to tool.

Use cases - --this could be a fantastic tool for diagramming components, whether you want to Mindmap something to make concrete what only a concept in your mind. --Modelling out infrastructure (maybe dynamically querying whatever status service you have to generate a dashboard ...again a premium feature) --Modelling out entities --Integrate it with Jupyter (formerly Python Notebook) as a premium feature. --(This is admittedly a wanky feature that someone in marketing would come up with, but if you want user adoption what I'd do is leverage the existing 'standard env' and build around it) i.e. Have it hook into Github or Slack and on a build failure (likely in your AWS Docker instance!) ping the person who broke the build and have a bot that announces in the startup's Slack-room to shame him/her along with some wanky dependency graph (just diff the last known build and walk up the prototype chain).

I'm speaking maybe 20% in jest, 80% in 'you can really cobble together a product like that and tie Stripe into it'. Visio needs to die. I was working on something similar myself (a little more limited in scope) but got distracted.

Just a feature suggestion - localize the hot-keys for shapes into something one can reach with solely their left hand, so as to free up their right hand for mouse actions. Between use the keys 'asdfgwerv' as main menu items (e.g. triangles, squares, etc), then associate each of those components with one of those keys, which when pressed will open up a sub-menu (regular triangles, isosceles, etc) accessible by the same keys.

[1] https://i.imgur.com/TBUycHc.png Something like that, where onKeypressUp pane_2 renders the contents of pane_1.