Sounds fine to me. I believe that most players realize at least approximately how much ammo they have (at least those who don't use anti auto weapon change programs) so that shouldn't do any harm.
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time left before unfreeze/unblink?
Unfreeze wouldn't be very useful. Feel free to add it but I don't see how anyone would need it. I wouldn't even have time to look at it during the half a second of freeze time. Unblink could be very misleading because there can be differences between its value for a client and a host.
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coins/diamonds/food eaten?
Coins sound fine, gems sound useless (they're only used in treasure hunt and you always know how many you collected there). I'm against food because regular players don't know how much they've eaten.