I don't know if anything can be done. But, would it be possible and would it be constructive to have a Translation Period for the Private Beta of SO sites in other languages?
During said Translation period, people could translate some canonical questions from SO and mark them as Community Wiki. We could grant a special "Translation Hero" Badge for people participating during that period.
I suggest this, because in new SO sites, it is rather easy to pick content from the original SO and translate it, or post a basic questions that you know will get a lot of votes. Causing people to gain reputation easily, but that is not representative of their true level of knowledge.
Also, people posting those basic questions, not necessarily will mark them as translated from the original SO, because if it is a basic question like "segmentation fault", or "difference between inner join and outer join", you can think them of the top of your head. Or you could search in SO, read the tittles, and then write them in your own words, so they don't look exactly the same.
There is a lot of room in these sites to post questions, and gain reputation for things they don't necessarily know. For example, translating things of a technology they don't know and potentially adding errors in their translation. Or using really weird expressions in their translations, because they are not used to that technology and the common words used for some of the terms.
Beyond the fact that this sort of "translation wars" or "basic questions race" could cause some discomfort between users, and annoy others, I think, the most important issue caused by this is that users can easily gain privileges that are usually hard to get in the original SO, which can cause a degradation on the quality of moderation and reviews in queues and as consequence there could be a degradation of the quality of the whole site.
There have been already discussions in the METAs about the possibility of raising the reputation level to be able to review certain queues, but if you could get that level of reputation much easier, the problem could get way worse.
Finally, I am probably late to arrive to the party, if there has been discussions about this already, or if the community has already a formed position about this I would really appreciate if you could point it out to me, because I couldn't find it.
I have posted in SO in Spanish Meta (I can translate it if you feel it would be useful) trying to get consensus on what to do about this. For example, if marking a post as community wiki or not if it is translated, and there is no consensus at all, I feel opinions are practically divided 50/50. Also as one user pointed out, most people doesn't read Meta, so even if we decide to do one thing or the other, most users won't know.
Note: You may notice I haven't posted any questions in SO in Spanish, that is because I have limited time during the week and I got access recently (2 or 3 days ago), I haven't had the need of asking in SO so far and there hasn't been unanswered questions of the technologies I handle.