I'm surprised. I'm not feeling this collection at all. I had no burning interest in Rare's older stuff so I was primarily in for Conker and Jet Force Gemini. Very disappointed to see that they don't run at a locked framerate. The 360 titles also have issues with their emulation, although to be fair that isn't Rare's fault. Still, I can't help but feel like this collection would have been better served with true remasters of these games instead of what we received. Would Rare have been able to make it to their 30th anniversary in time if they had elected to go this route? Probably not. But how nicer would it have been for their longtime fans to see Rare's games running in the best possible light?
At the moment, my favorite things about Rare Replay are the unlockable documentaries and video snippets into Rare's history and development process. They're very well done and I applaud Rare for including them. However, I do think the chosen method of earning stamps to unlock these videos is a bit counterintuitive to the philosophy of assembling a curated museum of all things Rare. These extras will eventually be made available for viewing on YouTube (if they haven't already), so having to unlock them seems a bit cheap. I don't see myself extracting any real sense of achievement out of unlocking them and I can't imagine many people doing so either. I therefore believe they should have been made available to players from the very start.
All things considered, my opinion of this collection is beginning to sour very quickly. Returning to the emulation troubles, they really are the biggest flaw of this collection. The quality of the thirty games (from resolution to framerate, to overall stability and bugginess) covers such an uneven range as to make the whole product seem rather slipshod. Many of the individual games in this collection are quite good in and of themselves, so the feelings that I have expressed here do not impact my perception of them in the slightest.
I would not currently recommend Rare Replay on the basis of its quality as a complete product but rather on the strength of a few games included therein.