I think that the recent take-over of the Moscow Patriarchate on the ROCOR should urge orthodox traditionalist churches to unite.
As regards the Russian situation, it seems to be there are not many people left in ROCIE. The best thing should be to negociate an agreement with the ROAC. Indeed, most ROAC parishes are in Russia and many ROCIE parishes are out of Russia. A merger would allow this church to work normally, as a Russian church IN RUSSIA, because according to me a church cannot remain too many time in exile. So, the foreign churches would become missionary churches.
The Greek case is more difficult because there are more jurisidictions. I think all the hierarchs implicated in moral scandals (sexual ones including) should resign. The union should be made around the most important church (like in the Russian case) i.e the GOC-Chrysosotomus.
Then the Russian and Greeks could enter in communion. I hope that people in ROCIE and ROAC are seriously examining this option but I fear that the personal problems will prevail. I interpret the fact of ROCIE not electing a new metropolitan as a sign toxards ROAC... I hope it is.