For the M8, they got Kodak to add eccentric microlenses (a technology not developed by Leica) to an off-the-shelf CCD from Kodak. There was nothing particularly novel about the sensor, the electronics, or the firmware, and there was nothing particularly novel about the rest of the camera. For the M9, they used a bigger off-the-shelf sensor from Kodak, and remembered to add the IR cut filter. For the M9M, they left the Beyer array out.
The result was a very good camera, but not a particularly innovative one.
I did not say that there was zero innovation. I said there was not much innovation. I absolutely stand by that assertion. The M240 is a much more innovative camera than the M8 or M9 were, but again it's mostly an amalgamation of an M3 with technologies that other manufacturers have developed.
The point is that everyone copies including Leica, so it's not terribly incisive to call out Fuji for "copying" Leica when Leica themselves have not added many new technologies or ideas to camera design in decades. Especially when Fuji have brought to market a genuinely new set of viewfinder technologies (in the X100 and X-Pro), a legitimately innovative sensor, and the algorithms needed to accurately demosiac that sensor. A company intent on just copying Leica would not have bothered to spend years developing those new technologies.
Innovation is, by the way, a different question than what you personally might want to shoot. I shoot M's for film because I like their handling and I've not found a film camera I like better. For digital, I prefer the small size and low weight of the X-E1 and X-100, and since digital sensor technology is still rapidly improving, I think it foolish to spend $5000+ on any camera body. With stunningly good cameras like the NEX-7 and X-E1 available, I wouldn't drop $3k on a 5DIII, either. It's just not cost-effective. At least Leica lenses hold their value.
If you like the digital M's, go for it. But you don't need fall into the trap of justifying your choice by denigrating other cameras and their designers.