Wimbledon should follow the lead of the US Open and adopt the 5th set tiebreak.
We've seen epic matches in the past, but now realize that they can hurt the idea of fair competition. Example...after Isner was exhausted from his 3-day match, how many people actually picked him to win the next match, good a player as he was?
For Roland Garros and Australian Open, I can understand not using the 5th set tiebreak, in the spirit of "attrition tennis" that characterizes those tournaments.
This way, we would have a 50-50 split between slams that do and don't use the rule.