(1) Home Airport: SEA (and SFO (and to a lesser extent can fly ex-YVR/PDX))
(2) Which fare: Varies -- cheapest-Y, cheapest upgradeable Y, or discount C. F by mile redemption only.
(3) How many miles: ~150-200k total/yr, but many are on Alaska/Virgin. Could also run $5mm/yr or so via a credit card if needed.
(4) Status: I have VX Gold, about to AS MVP 75K, and UA Silver (via MR via SPG). Can status match to kick this off too if needed.
(5) Economy Plus access. Priority services (I often fly with a weapon or lots of gear so checked luggage); I'm fat so domestic-F upgrades are nice. Lounges are good but ok with paying for memberships or using Amex Plat access. Intl C upgrades would be great though (using miles or SWUs or whatever). Award redemption is nice, esp when non revenue based redemptions in premium cabins.
(6) US Transcon (SEA/SFO to JFK/IAD), transatlantic (mainly FRA, TXL), transpac (PEK/SHA/SZX), NRT, SIN, HKG). SEA/SFO to LAS. YUL and YTO. Probably going to start flying to more second/third tier US cities though. Mainly try to avoid flying *A domestic (AS/VX/etc instead), so this is mainly for international or for going to third-tier US cities.)
(7) NH, SQ, LH, NZ. Surprisingly ok with UA in intl C, AC C, etc. Flexible.
(8) Own my own company (lots of flexibility, but will set same policy for other people; generally our policy is "please maximize ff/etc. benefits without net cost to the company -- getting elite status saves us money, so do it.). Travel is work, business, and both.

(All things being equal I'd love LH SEN or SQ KF Gold, but I don't think I do enough paid premium cabin for it.)