I'm not a huge fan of the smaller trophies, or the solid ribbon... but I like to think about it this way:
YOU STILL WON!
I know for the veteran teams that have a lot of wins behind them, the trophies look tiny, but for teams like mine that have never won anything official before- I'll take it no matter what size it is! I know my team accomplished something, and I'm proud to display whatever FIRST will give me to commemorate that.
I agree with a lot of posters that there are definitely better ways FIRST could have cut costs, and downsizing the trophies was not one of the best-looking options to us, the teams; but then again, none of us work at FIRST, right? We don't know what goes on there.
I think our best bet to voice this concern is to send that email Bill Miller suggested
here, and actually have another suggestion to back it up. An email saying "OMG! THE TROPHIES SUCK THIS YEAR!" won't accomplish anything. A well-crafted reasoning, as well as your ideas and thoughts, might have a little more impact.