New Joseph Audio Pulsar Graphene 2

I think 2 feet from the back wall to the tweeter is not enough space for any speaker.

Really depends on the speaker, and the room's inherent gain, and how it was designed. Rarely  you'll get true bookshelf speakers, and they need close wall reinforcement. I've designed some, and the only other one I know of like this is the Crystal Cable Minissimo Diamond.   Wilson also from time to time makes speakers like this.

Oh, and let us not forget Allison, who famously insisted that speakers should be against a wall, and designed accordingly.

As a prospective future customer for the Joseph speakers, my worry remains based on the many reports of "richer bass" that the Perspective 2s may overload my room.  The original Perspectives were on the edge.
My room is actually very good for getting even bass from most speakers, and I've yet to have any speaker truly be a problem bass-wise, but it always depends on the design of the speaker, too.

With the Joseph Perspectives I think it would be difficult to overload a medium-sized room simply because the rear porting comes with plugs that you can adjust to your taste/needs. If memory serves me correctly the Perspectives manual recommends the front baffle be 36" or more from the wall behind the speakers. So, if you have that much room to play with, you're going to be fine with Perspectives IMO. I have no experience with Pulsars. I'm currently running Pearl 3s (which have small rear port on the "satellite" and large bottom port) approximately 69" from the back of the shelving directly behind the speakers. The room probably measures somewhat more than 4500 cubic feet taking into account the open stairwell with high ceiling that feeds into the listening room itself. 

prof, while I don't have any experience with the Perspectives, I do have considerable experience with the Pulsars, both the originals and now the Graphenes and based on that, I would venture to say the Perspectives are going to need a fair amount of breathing room. Hell, the Pulsars need a medium size room.    

I do not equate “richer bass” with more bass.