I keep having this recurring conversation with customers over the last few days. It goes something like this: My D&D group has just about had it with Dungeons & Dragons 4, and Player's Handbook 2 is the book that will decide if we commit to the game. These are very good customers, sophisticated gamers that I've known for years, but haven't seen much lately. They know their stuff. Although they've gotten beyond the rule system, more or less, they feel their options are far too limiting.
If what they're looking for are more options, such as classes and races, I think they're in for a very pleasant surprise. My own group has been running classes from PHB 2, the bard, druid and sorcerer, for weeks now. We've been very happy, although the bard seems to fall down a lot. I've made fantastic barbarians, shifter wardens, and gnome minstrels that have made me giggle with excitement. Options are certainly there, if that's what's keeping people from committing. However, if this was my position, that the game felt incomplete, there's only one option that I know that would fix that.
It's a DDI Subscription. For $5 month, you get access to all the content of the books, previews of content, such as the PHB 2 classes I've been playing for weeks, and it's all integrated into useful digital tools. The Character Builder is superb, and I only get that feeling of vast options when I use this program. You gain access to all the books, magazines, and preview content. $5 a month is nothing, unless you're living in a dirt floor shack in Zimbabwe. I'm assuming D&D players just don't know about this amazing resource, as opposed to balking at the insignificant price tag. Some are unwilling to a commit to a monthly subscription since they're still on the fence. My advice is to hop off and see if DDI provides what they're looking for.