We use location tagging a lot over at the Money SE. With personal finance, there are often questions that are specific to jurisdiction. The idea is that if you are asking, say, a tax or legal question, or about specific kinds of retirement plans, then a country tag ought to be specified because those kinds of things vary according to jurisdiction. For many other kinds of questions (e.g. investment strategies, budgeting), the country doesn't matter and can be left unspecified.
This works well for us at Money, and I suggest a similar approach would work here at Freelancing, because some of the questions that are going to come up about freelancing will invariably be about establishing a business, realizing income, intellectual property or contract law, etc.
In other words: Certain kinds of questions here should have a country tag, and others would not necessarily need it. Where the location matters, experts on the site ought to, using a comment, request the OP to disclose their location, so answers can be placed in the proper context. It will be up to the resident experts to determine if location is relevant to a question, or not, and request & tag appropriately – and in some cases to remove a location tag if it is truly orthogonal to the question.
What we want to avoid by using location tags judiciously is a situation that, early on, happened frequently at Money: Somebody asks a good question, but doesn't specify a location, experts jump on it and answer it assuming (say) for a U.S. asker, and then the OP comments "but I'm in (Canada / Australia / United Kingdom / India)". etc. Wastes folks' time, leads to downvoting of answers otherwise valid but for location, etc.