Ah, that makes much more sense now. You want to enable a community of plugins/widgets/apps built on top of the index. That's fascinating. I feel it would probably require some centralized base set of widgets similar to what Google already provides. That way the average user can just type "5 minute timer" without having to manually install the widget first. Quality/security outside that base set might be nightmarish. People put a lot of stuff into search bars.