Why would we consider load times as compulsory?
Perhaps it's still out of reachwith the current technology, but I hope they'll be able to make a game without interior cells. Not only would it remove all in-game loading screens (perhaps to the cost of a longer initial load time), but it would also allow us to stare down at the street through the windows, and look at the people walking on it. With all the strategical enhancements it involves for spies, assassins and thieves...
It is out of reach of the two consoles. 512mb of RAM is a serious limitation and practically enforces loading screens. It could be done on a decent PC, but would pretty much lock it TO decent PCs, as it'd require a fundamentally different map and cell design structure.
SSDs have really come down in price lately, and while $/GB they're not quite as cheap as, say, 1TB in raid 0, they do have the rather large advantage of being significantly less likely to fail and lose all your data. A single SSD is less likely to fail than a HDD, and two HDDs? Well, raid 0 is a gamble that I just don't see the reasoning in taking. If you really need the speed, buy a faster drive. If you can't buy a faster drive, buy a tonne of RAM and use it as a RAMdisk, it'll be hilariously faster and won't fail.