Reviving CS 1.6 visually?
There are several legitimate mods and skins available for CS:GO 1.6, including well-reviewed packs with a variety of options.
I recall seeing 1.6 Promo well before the announcement of CS:GO.
Really, no one seems to be playing CS:1.6 anymore. Promod started around 2010.
The active group moved to GO, so that's it.