I think we'll get there. We have to take into consideration that Portlands urban growth started to happen several years before ours. So they probably had a smattering of 4-7 story apartment buildings going up on the outskirts of their CBD several years before they started to get the highrises shown above.
While it's nothing compared to Portland, the fact that we recently saw a 19 story and a 32 story residential tower completed that doubled our highrise residential in one development is nothing to scoff at, not to mention the additional 19 story tower that is planned.
With that said though, I don't think we'll see nearly as many for several more years, because our blocks are so much larger that developers don't need to go upward to take advantage of the available land. Case in point, The Metro Condos, that takes up over half a block face, because it could. If the block was shorter or the city required them to create an E/W midblock access it very well may have been a few stories taller.
Two things will drive our residential higher; 1) Available land in the CBD and around the edge will start to become more scarce and demand for housing will require it to be built taller. (this is the exact same principal that is resulting in taller commercial buildings) 2) The city will either start carving the blocks into smaller pieces themselves (I don't see this happening) or they will start to require/encourage more mid-block access created by developers, through offering density bonuses, or some other type of incentives to break up the blocks.
Trust me I want to see both our residential and our commercial buildings reach higher, and I see that happening along 4th S, closer to the Trax stops, but I don't see 4th S, going much taller than about 10 stories except for maybe near the Library stop.
As for for salvaging the pieces from the bank as part of the PAC project, the ornate ceiling is in the building that is currently still standing, the one with the arched front. I guess if we see that building standing a bit longer than it seems like it would require to simply tear it down, then maybe we can assume that they are saving the ceiling for use somewhere in the PAC. Hopefully there is a reason they demolished only as far as they did.