Hey there, back from some breaks and diversions, etc.
Just working on some Hunters, and the latest experience made me remember this thread :)
Finished Lceanium a few weeks ago, and have to say, none of the ones I camped (got quite a few just finding them randomly up) took particularly long. Of those I camped, the last two, the yeti in the cave and the spider in the cave, took less than an hour each to spawn. Respawns in there are fast, but still, it's less than 10 spawn cycles (times 3 spawn spots each).
Now have been working on ETWK. Now, I haven't been doing it strictly according to your method (break the names into groups ahead of time, work on one group at a time, etc). Got several who just happened to be up when I checked. The rest from killing PHs for 3-6 names at a time, with the list changing on the fly as I'd get some names, and then throw another PH spot into the mix. I'm now at the end of the list (Oklaric), and have now cleared the PHs 20x3 times, and still no name. Technically, this is by FAR the longest camp for me in this zone (none of the others even approached 10), so that would seem to back up your theory, however, this named spot was on my original set of spots to clear, and has remained as I've cleared all the others. So, it SHOULD have popped quickly at the beginning, since I only had a few names in the zone cleared, but it didn't.
Anyway, all just interesting data points. Now that I remembered this thread, when I start my next zone, I'll do the whole break into groups and just clear those groups thing, and report back.
Tatanka Wolfdancer, 115 Wood Elf Druid, 9 x 300+ Master Artisan, 7 maxed trophies (dang research! :)
Michone, 115 Troll Shadowknight
Anaceup Mysleeves, 115 Erudite Mage, 2 x 300 Master Artisan
Snookims Whinslow, 112 Erudite Enchanter, 2 x 300 Master Artisan
<Inisfree>, Tunare (Seventh Hammer!)