I have tink abaut it for a while and I'm just content with the current system at the training center.
I'd really like this added either as a Gold Account feature or something you could pay extra CSC to do! I probably wouldn't use it myself very often, but it would be really, really nice to have.
What Grouse said. What if we had javascript on the training page? So same layout and everything... only, when you click "train", the button grays out to let you know it's training instead of opening a new page every time?
Kind of like the floating items during a festival - instead of loading a new page, it just lets you know you got it instead of directing you to a new page and making you click 'back'?