Adding significantly to system information will provide no clue as to a person's bidding judgment or play and defensive skills. Even a high ranking may be partially due to longevity rather than skill. You have to make a judgment to risk an hour and a dollar on a combination of factors. There is usually no time to agree much on bidding and defense, just "Shall we use your card or mine or BBO's?". As for country, as with bridge skills, some are faked; others may be irrelevant. Good bridge players can be found everywhere, not always bidding strangely. A quick look at systems offered and ranking is enough for me to issue an invitation for a $1 game. Simpler is better.