Would it make sense to consider limiting the apps available in the Builder screen to those "activated" by the user?

The idea here would be twofold.

First, it would de-clutter and make it easier for users to find what they need.

Second, it seems to take a very long time to load the Builder screen, and it seems like much of that is loading all of the apps and actions within said apps. Most people aren't using 90% of the apps available, so if those things didn't have to load every time, it seems like it would lighten the load.

It seems like this filtering could be done by whatever apps have connections. Then, just make it very obvious from the UI screen how to add additional apps.