Every year it seems like Lego comes out with some awesome new piece that you can't wait to get your hands on and use in a MOC. So this topic is for you to discus the changes you plan to make to your MOCs with new pieces.
For example I plan on using the new round shoulder pads on Obi wan in white on my selfMOC.
The only new piece this year that I immediately jumped at the chance to own was the BIONICLE-styled add-on.
All the new pieces from the summer wave will be cool to have, but I don't see them as being essential to own. I could use the skull helmets and gunmetal armor pieces on an armored warrior design, and the new shoulder pads should find some use in a more streamlined, sci-fi MOC.
funny, I was thinking of testing out the idea, but then I realised they only came in white, black, silver and orange(me thinks) so it'd be more or less limited then nuva/rahkshi bewbs cause those came in main colors while the shoulder pads only come in monochrome, silver and orange, which is limiting.
Usually what I do with new pieces is leave them sitting around for me to look at for a while, then think how to use the parts after that amount of time. For example, it took me forever to figure out what to do with the lime green add-on shells from Breeze Flea Machine.