What's maddening is that nobody involved in this debate seems to realize that:
1. We solved resonance and pogoing issues in the 1960s vis-a-vis the Saturn V stack.
2. We can simply dust off the Apollo 18-20 J-series mission plans and the Apollo X/ALSS/AES/LESA studies, and execute them.
3. All we need to actually get back to the Moon is a Saturn V stack updated with newer materials and automation technologies.
4. SRBs are insanely dangerous due to their non-throttalability, and should not be man-rated beyond the poorly-designed Shuttle stack.
We knew all this *more than 40 years ago* (we ignored the SRB issue back then, which led directly to Challenger); how can these people be so ignorant?!
Here's a link to just a few of the studies which were done of follow-on missions. Here are links to Apollo X, ALSS, AES, and LESA.
Stephen Baxter's Voyage is an interesting alternate history based upon some of these mission plans (although he's way too hard on the Germans, IMHO).
The bottom line - if NASA want to go back to the Moon (far better to offer a $20B X-Prize for the first organization to put 30 men on the Moon for a year and a day, and return them safely to Earth), all they have to do is to start building modernized Saturn Vs, Apollo CMs, SMs, & LMs.