Very strange, because this feature was removed from Chrome just after DANE RFC was published and all work is done. It is evident that DANE will kill SSL certification business. The development suspension may result from pressure coming from CA's.
That is not at all true of DNSSEC. The DNSSEC roots are fixed. If you're not trusting the same roots as everyone else, you're not really even on the same Internet anymore.
The UI you speak of is almost never invoked, unlike with the DNSSEC model where the address itself conveys information to the user in a form that even many non-technical users are accustomed to interpreting.
It is not possible to have users configure different DNS roots. DNS is part of Internet connectivity.