Lord Anomander
Professional
There are many flaws with the current system, but do you think another system such as ELO would be better (http://tennisabstract.com/reports/atp_elo_ratings.html)?
The advantages are rather obvious, losses to weaker players count more, consistency is important, and you can't simply win a big title and shoot up in rankings. But there are also disadvantages such as the status of the tournament itself doesn't matter (which isn't necessarily bad though, if there is a 250/500 with many good players participating you could earn many ELO points and smaller tournaments could be more attractive) and ELO doesn't look at recent performances (at least not the last 52 weeks).
You also don't lose points during injuries which is a good thing in my opinion but could be abused to maintain a good ranking if you are in a bad form.
Despite thinking that Murray deserves the #1 spot I also like to look at the ELO rating as an indicator of performance rather than the official ranking.
The advantages are rather obvious, losses to weaker players count more, consistency is important, and you can't simply win a big title and shoot up in rankings. But there are also disadvantages such as the status of the tournament itself doesn't matter (which isn't necessarily bad though, if there is a 250/500 with many good players participating you could earn many ELO points and smaller tournaments could be more attractive) and ELO doesn't look at recent performances (at least not the last 52 weeks).
You also don't lose points during injuries which is a good thing in my opinion but could be abused to maintain a good ranking if you are in a bad form.
Despite thinking that Murray deserves the #1 spot I also like to look at the ELO rating as an indicator of performance rather than the official ranking.