I envy them as well. I *really* wanted a stick-shift new 5, so Sport's all there is here, and that's what I bought. Woulda been great to get a swell deal on a Touring or Grand Touring with luxo features...but I really wanted a m/t.
Base price of a Sport and GT at the moment are about USD $5K apart. I planned on a few upgrades when I bought it to get some of the GT-goodness installed, but don't plan on five grand's worth. Natch, the resale value will likely not keep pace (my Sport with aftermarket upgrades vs. a gen-u-ine GT with factory equip) but the plan is to own this vehicle long-term anyhow. May as well enjoy it.
Foglights (easy, OEM Mazda); leather seats (not cheap, but all the colors of the rainbow available) w/heaters (hi-lo settings on aftermarket ones); some killer, modern, highly integrated navi head unit mit iPod, bluetooth, and USB capabilities (many choices); tinted glass; HID's (yeah, aftermarket ones won't have a height adjuster or housing optimized for them but if they're as good as the ones I've installed on two other vehicles it'll be good enough).
The sunroof on our CX-7 was opened twice I think in the 3 years we drove it; and I actually like the 5 better w/o the sidesills and rear spoiler. So no upgrade needs there. Heated mirrors would be nice, haven't looked into installing those, and I've never had rain-sensing wipers so I won't know what I'm missing I guess. The auto-on headlights on my CX-7 were handy in some ways, but those *wouldn't* always come on automatically on rainy days (as our state law requires) so I considered them more curse than blessing since I was often overriding them anyhow.
So that's pretty close. Some nice rims/tires, stiffer swaybars, and some not-loud but more significant exhaust tone would prolly be the rest.
