I will re-state my argument from the thread which spawned this topic:
I would rather have masked loadings through seemingly seamless gameplay than cuts between one map to the next via loading screens.
The design document for ME:A stated something about being able to seamlessly get from your ship to a planet and drive around in the mako, and that leaves me hopeful that ME:A will be like ME1 in the sense that, instead of actual loading screens you'd have to manually exit the opening hatch of your ship after docking, and if you did fast-travel around a place, like the Citadel, it would cut to a loading screen depicting the city-scape looking up towards the arms of the Citadel structure, and it felt very appropriate, as opposed to the rather bland, techy screens from ME2 or ME3's really pixelated and choppy panning around the Citadel which looks kind of like it was in a beta-state when they were shot.
Like so many things, I hope they take the idea of ME1's transitions but just improve it and make it work. Same as with the Mako and the rest that they seem to be bringing back.