How would an M-Card benefit you Saxion? If you got S-Cards, you wouldn't need to pay an arm and a leg for them, maybe 2 dollars more per month than a single M-Card. I would like M-Card support too, but I have bigger fish to fry (SDV, MRV, TTG, Copy Protection to name a few.
I also would be happy if Tivo fixed the pixelation concerns that many are having (I never did), as that would be great for many many more people. Then go after a SDV fix and satellite support, so there is no reason for someone to avoid a great Tivo box, then multi room viewing and tivo to go, so many like myself could use an external hard drive other than eSATA, and finally join the fight against copy protection on television recordings.
I have 2 S-Cards, never had any pixelation issues, don't want satellite, have no SDV issues yet, but would be content waiting for my wishes if more people were served and had access to working Tivo. Secondary concerns are price of additional cards and additional functionality, lets just work to get everyone on board!!!
Oh yeah, and stop the cable company monopolies, but Tivo doesn't need to do that, just the government.