Thx Fengist. Ideally I would love to use a streamlined engine like C3, but robust, and with access to in depth features, in case I need them. Depth and simplicity can exist in one package.
The problem is so many devs who decide to work on simple, streamlined apps, don't expect users to want to do serious production using them. Which is a pity, cuz.. sometimes a simple, streamlined, but solid, robust app, can be the perfect fit. Like Weta designed Mudbox for a specific task. Maybe game design is a lot broader.. but look, Unity is pretty simple on the surface too, it's really easy to create and manage content [what's not easy for me is visualizing a project in C#..].
Anyway, there's no good reason for not having a solid/robust way to group and list in-game assets. And prefabs / configurable assets at the core of the software.. I found C3's layouts and event sheets to be kinda like doing 2D animation in the old days, before animation timelines were invented. I mean, there are so many excellent examples of how other engines do things nowadays. C3 devs decided to reinvent and be original.. so the engine looks simple yet difficult to use. :D