Considering that it’s been a year since the last stat/inventory sweep with the beta release, and how far people have been collecting items already, you’ll just be selling items for 0,02€/$, a.k.a. steam’s share.
I have bought like 30 standard cases overall, I only do trade-ups with duplicates, and I now have more than 120 loadouts from bronze to cobalt, most of them being silver+. And I regularly play with 20 of them, the rest is just here for the museum. Give us trading and everyone will open the floodgates.
In my opinion, that’s already a dead idea, unless they lock items acquired prior to the trading release. Otherwise prices will turn trading into a useless feature in less than an hour.