I mean, if you're looking to gripe about prior art, Nexus probably has you all beat.
http://nexusracing.com/newsdesk_info.php?newsdesk_id=60
I've been using LiPo since the Orion packs came out 2+ years ago, and the first day we used them, we discussed having a local machinist make a tray exactly like what you guys are both producing. It's a good idea for sure, but hardly unique, or anything but the most obvious solution.
Well, unless you're Corally.
They could chop wood with that crazy thing! Gotta give 'em credit for creativity though.
When EA showed me the tray at IIC, I was jealous it wouldn't fit in my car. Shoo gooing weights to the bottom of my packs is jank.