1. No.
2. Reives don't die on their own, but they don't recover HP either. (They only recover MP at 1/tick.)
Problem is that there is little incentive to go there. You might see some alliances heading for T1-3/T4-5/Wildskeeper, and those might clear colonization reives on the way, but they reform in an hour.
Once people get their KIs, all they care about is joining the Ceizak Delve to farm plasm. If you happened to be leveling the new jobs or doing something else during the first few weeks of Adoulin, you're out of luck.
The only way to get people back onto reives and field NMs, is to make it worthwhile.
1. Colonization and Lair Reive rewards should be limited to yggrete shards, yggrete rocks, skirmish items and airlixirs (NQ).
2. Plasm rewards from field NMs should be increased 10-fold. Why fight a NM with a 20 minute depop limit and a decent chance of outright failure due to links, bad crits or timeouts for a mere 500 plasm, when you can get 3000-6000 plasm beating trash mobs to a pulp for 45 minutes?
3. PLD (Ochain). Preferably 2. Can't do a single event without them. Entire alliances are sitting in Adoulin, easily waiting 2 hours for that one last PLD (Ochain) so they can do delve. Who do you think that PLD is going to join, the field NM run (clearing reives on the way to ??? pop) or the delve run (and sitting 2 hours in Adoulin again because the first PLD joined the other run.)