As one of Vuo's developers, I work on Vuo's engine (the thing that makes compositions run), work on nodes, and write documentation. You'll see me on the forums answering people's questions about Vuo.
I enjoy using Vuo to make live music visuals. My hope for Vuo is that it will grow into a community of people of diverse backgrounds and identities making lots of different artistic, useful, unique, goofy, beautiful, crafty, wonderful compositions.
Estoy practicando para ser competente en español. Si publicas en el foro en español, trataré de responder en la misma manera.
If some people are interested in selling plugins, then yes, we'd be open to hosting a simple store. However…
Caveat venditor (let the seller beware) — With the initial release of FFGL and FxPlug exporting in Vuo 2.0, there will be no copy protection. If someone bought your plugin, they could then turn around and share it with an unlimited number of people. Would copy protection for plugins be a prerequisite for a store? (If you think so, please create a feature request for it.)
Another option would be a plugin gallery, similar to the node gallery and composition gallery. Plugins would be free, with the option to tip the author via Flattr or PayPal (same as already exists in the node gallery and composition gallery).
You could feed your key date-times (as seconds after the start date-time in 1996) into Make Points along Spline. The node outputs a list of points that contains your key date-times, along with other date-times interpolating between them for animation. As the mouse moves left/right, you scrub through that list of points.