Replace paranoid mode with three pools and per-pool maximum failure ratio:

Three pools are used: --pal_pool, --neutral_pool, --foe_pool.
To start with, each pool gets 3 servers.

Per-pool:
 - one random server is tried until success
 - first successful result is used
 - a maximum failure ratio (0.34) before giving up is passed
   with --allowed_per_pool_failure_ratio

The median of the per-pool results is used.