I'm only going to address the 4th point, as it's related to the stale/eff ratio.
4. Taken directly from our poolserver a few hours ago, associated with your worker, today:
jine@jine:~$ cat ipscrub | xargs -L1 host
205.233.163.109.in-addr.arpa domain name pointer gorz.torservers.net.
36.147.48.199.in-addr.arpa domain name pointer tor-exit-router36-readme.formlessnetworking.net.
200.233.163.109.in-addr.arpa domain name pointer wau.torservers.net.
Host 130.211.32.178.in-addr.arpa. not found: 3(NXDOMAIN)
132.13.120.74.in-addr.arpa domain name pointer bouazizi.torservers.net.
60.171.76.69.in-addr.arpa domain name pointer cpe-69-76-171-60.kc.res.rr.com.
150.15.120.74.in-addr.arpa domain name pointer raskin.torservers.net.
Host 243.73.110.208.in-addr.arpa. not found: 3(NXDOMAIN)
20.86.120.79.in-addr.arpa domain name pointer stargrave.org.
1.178.126.94.in-addr.arpa domain name pointer tor-exit01.solidonetworks.com.
45.147.48.199.in-addr.arpa domain name pointer tor-exit-router45-readme.formlessnetworking.net.
224.53.141.62.in-addr.arpa domain name pointer tor1.digineo.de.
78.216.192.173.in-addr.arpa domain name pointer 173.192.216.78-static.reverse.softlayer.com.
102.189.44.96.in-addr.arpa domain name pointer herngaard.torservers.net.
50.245.167.46.in-addr.arpa domain name pointer torsrvc.snydernet.net.
Host 140.211.32.178.in-addr.arpa. not found: 3(NXDOMAIN)
40.147.48.199.in-addr.arpa domain name pointer tor-exit-router40-readme.formlessnetworking.net.
41.147.48.199.in-addr.arpa domain name pointer tor-exit-router41-readme.formlessnetworking.net.
Host 18.82.110.208.in-addr.arpa. not found: 3(NXDOMAIN)
21.226.47.96.in-addr.arpa domain name pointer bolobolo2.torservers.net.
42.244.226.83.in-addr.arpa domain name pointer c-2af4e253.09-8-686c6d10.cust.bredbandsbolaget.se.
133.227.130.37.in-addr.arpa domain name pointer torland1-this.is.a.tor.exit.server.torland.is.
Host 92.32.173.46.in-addr.arpa. not found: 3(NXDOMAIN)
73.226.237.80.in-addr.arpa domain name pointer tor3.anonymizer.ccc.de.
66.164.14.67.in-addr.arpa domain name pointer 67-14-164-66.kcnap.net.
74.226.237.80.in-addr.arpa domain name pointer tor4.anonymizer.ccc.de.
76.226.237.80.in-addr.arpa domain name pointer tor6.anonymizer.ccc.de.
29.191.166.108.in-addr.arpa domain name pointer tor-exit.hexhost.net.
164.181.247.77.in-addr.arpa domain name pointer rainbowwarrior.torservers.net.
165.181.247.77.in-addr.arpa domain name pointer politkovskaja.torservers.net.
Host 146.137.195.69.in-addr.arpa. not found: 3(NXDOMAIN)
If you have any more questions or similar on your mind, contact me using IRC or e-mail.
This "issue" is closed and it adds unnecessary posts to the thread.