Oh come on now guys!

" we sure don' t have any carbon arrows that would be up to the challenge."

Of COURSE we do...you just have to spend MORE for them!!! In fact if ANYTHING will be " up to it" it will be carbon arrows. After 20-50 shots into a 3D target, and then trying to get them back out, aluminum arrows (and to a much lesser extent ACC and the like) will be to bent to get back straight...and even if you COULD get them back....the spine would be wrong anyway. Of course the cedar arrows won' t work without a drop away rest to keep them from starting on fire

We ARE seeing more technology in the carbon arrows. carbon weave arrows (SME Epsilon, and the new PSE arrows for starters) show a lot of promise.
Yes, we may have to put a little more effort into our arrow building than having T-Bone at the archery shop hack our arrows off, then HOPING that the ends are perfectly square. But it can be done...and with todays arrows (well...Carbon Express and PSE will have to make some 500 and maybe 600 series arrows).
Instead of looking at the negative, look at the possitive. With bows THAT efficient, more hunters will be shooting higher KE, and getting more pass throughs even on less than perfect shots (think Moose, Mule Deer, and Elk)

As for the future of bows, I think the trend will simply be to get more efficiency of of bow in general. YES, IBO specs get more attention, but if those specs were everything, each bow maker would only have 1 bow for sale. We will see a bit more along the lines of straight and level nock travel...though GOOD solo cams bows are about as good as any 2 cam or 1.5 cam bow...maybe the CPS is PERFECT...but the rest are NOT. But I don' t think it matters that much. We WILL also see bows trying to get QUIETER. Look at all the sand pockets, Sorbathane, and harmonic hoo-haa we have now!!!.
Simply put, bows will continue to improve on all fronts. Smoothness, quietness, and of course speed...with ALL weights of arrows.