I'm just going to copy a comment, because it looks like the crosspost didn't update the edit from the original post...

Copied comment:

buyitforlife is a fantastic community, but I’m not sure it fits what I’m talking about because it’s kind of specific to exclusive products that are meant to last. I’m imagining something that’s covers a more broad range of products. Stipulations might include things like:

-reviews

-design speculation

-improvements

-collaboration

-development

-creation

-also, no sponsored/commercialized products!

(development and creation are super ambitious, but I’d like to include them just because)

I’m very analytical about product design, especially when it comes to electronics and technology, and I like to imagine ways that things could work better or be designed better. I just think it would be cool to have a place to discuss things like that. I also feel like it can be difficult to trust reviews that come from one source, so having a federated collection to start building might be a really useful resource