2.2 a-b: Link Recognition by Reserved GI?

The ERB schedule calls for voting on these Feb. 19th.
I've take the liberty of grouping a few here that seem totally related.

2.2.a Should we allow link recognition via a reserved GI? 

2.2.b If so, what should the set of GI's be? 

Cheers, Tim Bray
tbray@textuality.com http://www.textuality.com/ +1-604-708-9592