Ayy I'm glad this feature will be added and will benefit many people, but I do find it suprising that this thread was the way to informally announce the feature.
To me, it seems that if nobody had randomly decided to post asking about Scene Graphs, then this whole "Provide Scirra with early details so we can tailor it to our customers better" approach may not have been started.
OP did indeed post this after 3 years of creating the suggestion, but if OP never decided to post this thread, then would Scirra have made their own interpretation of Scene Graphs and then release a beta and people may have had completely different ideas?
The other notable thing is, this is not like, blog news? It's cool to hear about the future of Construct 3! A roadmap is always welcomed.
However, I'm a bit unsure about what Ashley has said, with the whole "people should put more detailed description in their suggestion." It is known that the suggestions website is a lot of administrative work for Scirra to go through, on top of everything else that they do. I'd imagine that if Scirra does not have an interest in their first impressions of a detailed suggestion, then all of rest of that suggestion you spend much time thinking and writing out, may be wasted. To even have your suggestion be acknowledged typically relies on the popularity of your suggestion.
I did post some suggestions back when I was subbed to C3, they're likely buried amongst all the other suggestions, but this thread made me wonder what would have happened if I posted on the forum about one of my own suggestions, would it gather more attention? If so, why aren't more people doing this?