Creep Movement.

[OnnMacMahal]

You're assuming the "dead" space that is being skipped over by creeps has tons of freeps just hanging out in it waiting for fight.

This is partly a chicken/egg problem. With maps, why would freeps go to those locations? Creeps are likely to skip across the zone with maps, so freeps are more likely to camp map-in spots. With freeps moving directly to map-in spots, creeps are even less likely to waste time looking anywhere other than map-in spots for freeps.
Without maps, creeps are more likely to be moving across in-between spaces, the same way freeps have to cross open spaces. TR and Lugz rez locations still create a backstop of sorts, so you don't have to run all the way from grams when you die in a fight (assuming your side is pushing across the map) but the landscape between engagements and rez circles will not be always-skippable space. The faster March ability also means that physically running from a rez circle back to a fight is much faster than at any time in the past.

Maps and map quests were literally the reason why creeps go to HoarHollow, Arador's End, etc. So you want creeps to go to those areas, but you just removed the only reason why creeps go there??? . . . And nobody is coming out to the Moors to mainly PvE.

We're still working on some other plans to incentivize travelling to different corners of the map, but daily quests and their rewards still exist. The quest>map incentive is already basically moot for any reasonably veteran player (for many creeps, it's been moot for more than 14 years) and most new players don't have the resources to hold their own in PvP while questing to earn maps, so in that sense the quest>map incentive mostly promoted greenie creeps wandering around where they could be easily killed.

. . . freep rezzes are far more abundant and superior to creeps, and that gave the freeps the advantage in prolonged fights. Removing maps just made that issue 100x worse. No amount of run buffs is fixing that.

I agree. That's a class/skill balance problem, not a map problem. That's why we're continuing to work on improving creep skills, traits, and combat competency relative to freeps.