Process of reviewer election is very long and difficult. As I wrote, in Poland there are enough caches to have your own reviewer, but not enougt to have more than one. Sincerely, one is sufficient . But you can´t wait, new reviewer will be only in weeks, it´s possible it will be few months . First, I and my Slovak colleague choose some candidates, then we will speak with them and asking , then we will make a suggestion with one to Groudspeak and if GS will be agree, he get him to world reviewers community and they will have many and many questieons, comments (for example they will look to Your profile ) etc. If they validate him, then it will be many teaching and after that is first Polish reviewer only yours .
About criterions: 1. activity for a community - caches hidding (here is your biggest Polish problem - you are playing Opencaching, so you all have too little hidden/founded caches ), events making, servis to a community, for example geonovices teaching etc., 2. experiences in GC - many founded caches, knowledge of GC-rules, 3. life-experience/knowledge/lifestyle - age, traveling, languages (that´s not my strong page ), enough free time etc., 4. other - no enemies in community, no pronounced confessions (this criterium was a reason for Groundspeak to dispproval one of your candidates ), ability to solve problems (for example between cachers) and be objective etc.