My vote is for them to be SPI lines. That means more/faster RAM, right? RAM is the most 'visible' upgrade, performance-wise, that anyone can do to a (currently regular) computer... I realize you can't upgrade RAM within an EOMA card, but hey -- all the more reason to streamline it :)

A pity that we can't have a "modular" (socketed/slotted) EOMA68 card... I realize CPU sockets are kind of going the way of the dodo, but I'd still like to be able to at least upgrade the RAM if I want to, without building myself a reflow toaster oven or some crap like that. I wouldn't say no to EOMA-specific RAM modules -- heck, use those awful super-tiny fiddly-as-crap Hirose connectors if ya have to (I hate 'em with a passion, but they do friggin' work) -- OEMs did proprietary RAM modules on laptops for years bordering on decades, back when you had to distinguish between "luggable" (Osborne 1, Compaq Portable), "clamshell" (GRiD Compass, modern junk), "partial clamshell" (IBM 5140 PC Convertible), etc... I have a Toshiba 3400CT like that (it's an early clamshell with a 486 inside). I'll never be able to afford a 16meg module for it, as a result, but (speaking to the whole group here) I think our Luke has *ahem* a bit more dedication to keeping things going and available for people, than Toshiba did back then...!