A good starting point for SS is 2:1 or 32/16t. Why not go 22/11? Besides the tighter circle that the chain makes possibly wearing it out sooner...what's the drawback of a 22/11 gearing on a SS hardtail running a cassette freehub spacing the 11t inward?
-less chain/smaller chainring and cog= lighter
-way more ground clearance
-less chain = wear out what ya got sooner
Any other negatives?