I don't think we care if there's a Chinese toy with the same name. In fact, given the TM limitations we already have, such a toy could co-exist already with no issues. The concern is (IMHO) that said toy becomes a sensation, and the company sues us in an attempt to get the domain from us.

Mounting a legal defense when you have a valid and current registered trademark is quite minimal. You basically have to show up, say "we have this current and active trademark of X years", and the case is effectively closed. Without that it becomes a much more involved matter, and is far from guaranteed. Just ask the guy that owned the Groupon website before Groupon existed.

Personally, I feel this ounce of prevention is way better than trying to having to cure it later. Will we need to? I don't know. But is it worth the gamble to not spend the funds for another 10 years?

I'd say renew with the minimal set needed (eg EU only). I don't see the advantage of registering in the US, China, etc. Holding legal ownership in the EU, where the servers are, should be enough to prevent any problems. It also forces jurisdiction to the EU, which means things will be easier to maintain by existing members in the long run.