Ah. We had this discussion and tried a few things almost 2 years ago, so I'll skip to the point.
First problem: The zone fog didn't resize with the map page. Iirc it gets deleted, in fact, so you'd just have pure black each time you logged in. You could use one of Zonx's tricks to hide it completely, I guess, but you'd never be able to see where you have and haven't gone, just like dungeon maps. But at least it would be consistent.
Second problem: As for the icons needing repositioning, all we'd really have to do is add the property
PackLocation="cpc,cpc" to all of them, and they'd reposition fine on resize. However, unless SOE did the same with all server-controlled icons, you wouldn't be able to see them, and that includes the player marker and groupmember markers. We could override with our own maps (like how SOE added zones for the Peat Bog and other newbie zones but no one sees them if they have EQ2MAP running) and recreate the static POIs, but not the dynamic ones. Heck, Talyn's Minimap doesn't do resizing, and the player/groupmember icons don't get repositioned properly anymore.