All documents from your Google Docs with icons appear in the Google Drive folder, and you can open them from there (in the browser), which is convenient, but you should not think that this is a backup. These are just links to documents. Offline work is arranged through the storage in the browser, you need to enable it in the settings in Google Docs.
Prices for extra space, it turns out, greatly increased. Lower rate - six times. It's not very clear if you can still purchase a place for Gmail at the same price. It was: $ 5 / year for 20 GB, $ 20 / year for 80 GB etc. Now: 5 GB for free, $ 2.49 / month ($ 30 / year) for 25 GB, $ 4.99 / month ($ 60 / year) for 100 GB.
It seems that there is no mechanism for sharing the public links to files directly from the local machine, comparable in convenience to Dropbox. You need to go to the web interface. Poorly.
Moving documents between folders and renaming them is transparently reflected in online documents. The presence of several labels / folders assigned to a document looks like a copy of a label document in all of these folders.
The list of documents in the web interface now looks very bad - for some reason, folders are looming over it, to the left they are duplicated under the My Drive nameplate.
You can choose which folders to synchronize in the Advanced version of the interface. After switching back to simplified it does not switch.