A specific example: Try adding a timezone to a city. That's something that make complete sense to do, and yet Wikidata gives almost no affordances on how to do it. To get even more specific, it doesn't give a suggestion on appropriate types of data (UTC +/-?, TZ Names?) and it's completely opaque how to deal with summer time (probably via a refinement, but it's not clear what it should be called).
I agree it's pretty easy to add a Freebase ID to a Wikidata ID. Unfortunately this isn't really that valuable, because it's easy to a machine to work it out too.