Hi everyone
I loved it and I am happy to see something from D8. Well done Boonex team! Way to go! Yeahh
I want to deeply ask your attention for the DESCRIPTION Feature, before it release as a mandatory thing. It MUST NOT BE THIS WAY! Please!!
I strongly recommend that after user has click to upload, it just upload and finish. And have Descriptions/Tags as an OPTIONAL feature, in a SEPARATED PAGE.
Still, if you want Description/Tags to be placed before the Submission, so you should see more hide first the Uploaders or Just open a new page for Description/Tags.
I am sure that a lot of end-users (my, yours, our clients) will take a while to figure out that they need to drill-down to see that. Maybe they will just think the system is bugged.

Keep the good work guys! Go Go