http://ma-jan.or.jp/jan-up/nanikiru1007a.php
I don't want to put the full thing here as we haven't got permission (I've asked for it so we're just waiting now...)
BUT, I don't see any harm this once in translating some of the answers of the Japanese professionals.
Let me know what you all think about this format for the WWYDs.
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Discard

I would like to discard


Discard

This looks like a pinfu (peace) hand so discarding this tile won't compromise that.
I won't use the

Discard

Aiming for 567 sanshoku (3 coloured runs). If I pull a





I'm aiming for 567 sanshoku (3 coloured runs) so I want to make a head (pair).
Ideally this hand with be 567 sanshoku (3 coloured runs) so this tile won't help and I want to keep as many of the tiles in the other two suits.
Discard

It's the East round and the scores are fairly even so I'm going to aim for a pinfu (peace) hand or tanyao (all-simples). If possible sanshoku (3 coloured runs).
I hope to use


I'm thinking that this hand will turn into a 456 or 567 sanshoku (3 coloured runs) hand so discarding

Discard

Aiming for sanshoku (3 coloured runs) 567.
Aiming for tanyao (all simples). I will also discard straightaway (tsumokiri)



I want to fix my head (pair) and try for sanshoku (3 coloured runs) if possible.
I would discard this tile to get to tempai (ready) quickly and also keep the most options open. Tanyao (all simples) and 1 dora is fine and it will protect against a renchan (dealer continuance).
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Anyway, I churned this out in 10 mins so let me know if you spot a possible mistake. I haven't translated all of the answers, just answers I thought were interesting or representative. Let me know your thoughts!