The quality of Poland
As you can see, we probably won't be able to reach the 15000 of accepted Wayspots.
First thing, there are a lot of fake/abusive/etc.nominations in queue and things has gone worse when you let level 38 to nominate (You really just could let them review for those rewards). I can send you a full pendrive with screenshots of things that we had to review here in Poland. I reported some of them, but I can still find them, because those people just keep pushing them again into the voting without being punished.
Second, most of my reviews are not Polish, but I live in Poland. My nominations needs few days/weeks/months to get out of queue, even with upgrades, but we are getting a lot of Czech, German, etc. I've never even been there, so how should I know if the thing that I'm reviewing there is real? Translator doesn't always help.
We can't get our nominations into the voting, but we can get them from other countries?
Third, reviewers are not punished for rejecting good nominations. For example, restaurants are not accepted by Polish reviewers for really no reason. Mine was rejected 8 times for almost all of the reasons you can select. It's not a generic restaurant and it exists for 13 years, so reviewers can clearly see it.
Sometimes we have to nominate something 4-5 times to get it accepted. Also Ingress is not very popular here, so people have no idea about any cells or the 20m distance and have no idea why their nomination is a duplicate or why they can't see their Pokestop, when it was accepted. (By the way, Ingress players are not disadvantaged if the portal changes cells)
Frustrated people are giving up after a while and stop reviewing/playing.
If you are changing criteria, you should make every reviewer read it and pass a new test and we need a test that will allow us to nominate, if we pass , with no way to find anwers on the Internet.
Polish players are hard to deal with, but without any movement from your part, the situation will not get better.