Hey @Thiago.Unreal, Thank you for your feedback!
Indeed, seems really challenging at this point to plan how the UI layout could be, where and how to add new features without overloading it, trying to keep it very simple to use and at the same time have as much as possible “on screen” so users do not have to go nuts opening and closing plenty of taps, having most key features in a handy place all time. Complicated, but I have to try to keep that “minimalism” you speak about, some how.
I am curious about that similar tool of yours 
.
“My idea” if I could call it mine… Is to attract artists, that are not familiar with real time technologies, to UE5. Create something really easy to use, so any body can just jump into some of the most fun things to do IMO; visualize models, placing a camera, adding some mood, getting some quick renders, prototyping, and overall, why not, have an enjoyable experience without struggling with the pretty steep learning curve of UE. This can create some interest in the technology, and individuals could potentially start diving into the “massiveness” of Unreal, after getting a little idea of what they can do with it. I would also like that most experienced users could profit from some of the tool features, but won’t sacrifice the simplicity of use.
If you allow me, I would encourage you to continue your development, sure that we are not the first, nor the last, to prototype a similar tool, but probably, most of us do not share the same goals/ideas and we won’t be doing it the same way. At the end, there is more to choose from, which is usually a good thing.