> as there is no traditional DNS system available to provide easy to remember hostname addresses
I think in future reworkings of TOR a decent DNS apparatus will be one of its features. Usually 'hacks' like this are made obsolete if the hack is repeatedly used and has reached a saturation point. One example of that is how ICANN now allows for any number of novelty gTLDs and I rarely see domain hacks now because of this (Think of using .delicious instead of del.icio.us).
I think in future reworkings of TOR a decent DNS apparatus will be one of its features. Usually 'hacks' like this are made obsolete if the hack is repeatedly used and has reached a saturation point. One example of that is how ICANN now allows for any number of novelty gTLDs and I rarely see domain hacks now because of this (Think of using .delicious instead of del.icio.us).