Agree with the placement of the power switch: very awkward. Interestingly, the new Polaroid 300 apes the Instax Mini's design, though the parts are plastic and the price is ~$70. The power switch is the lens telescope: pull it out, the camera warms up for a few seconds like the 600, a dial allows one to choose between 4 poorly, calibrated exposure settings (I admit I haven't yet experimented much with fooling the flash) & the camera is ready to shoot.
As a long-term Polaroid lover who became enamored of their essential singularity and fetishistic quality in reaction to the faked perfection of pixel swatches, at 6400%x, of the infintely-reproduceable Photoshop documents I was more frequently swimming in as part of my professional duties, I snatched up the 300 when I saw it. I was simply pleased that a consumer-grade instant camera was once again being produced, even if the market is driven by people attracted by the kitsch value (and who probably determined the frustratingly small business card-size of the 300 film.)
After a brief and bitter phase of experimentation with Impossible film (destiny lives in a name), I was happy to see instant cameras return. I will probably shell out $200 for this one and hope that higher-quality film in more formats will become increasingly available and less expensive.
One can dream. I still have a medical Polaroid (five separate boxed components, that, when assembled, are designed to shoot wounds) that I used to shoot macro & what are best described as strange images. My art work isn't calling for that right now, but I'd love to have the option of using it again. What a strange & marvelous beast it is.