BlackBerry made my day today with a feature I have wanted for awhile and have now discovered IS in OS 10.2.1. At first I reported that there was a new option in the hub to resize images before sending but it did not seem to work or actually do anything. Then all of a sudden today it started to work out of the blue. It is very hit and miss but it DOES exist. I managed to get it to show up when sending one screenshot but not the other. At first I thought it had to do with size but I would send the same screenshot where it would work together with another one where it did not and it would not show up again.
In other words image resizing before sending definitely seems to be coming shortly. The feature is half baked in the OS 10.2.1 leak but hopefully later builds will round it out. Kudos BlackBerry 10 team! Maybe you can let us resize images right after we attach them so we know if it works before sending them out?
PS: Let me know if you figure out when it does and does not work!