That's correct. You cannot load-balancing point-to-point tunnels.

1. No idea. Many.2. Sure can.

Unless I am mistaken the ASA doesn't do VPN Load Balancing for point-to-point IPSec connections either. What you're really after is opportunistic connection failover, and/or something like DMVPN. Coordinating opportunistic failover shouldn't be too m...

Sure... More importantly, what's the event that indicates that your DNS server went down?