[Richsgt]

I don't think we've ever used the same drivetrain year to year, portions that work have been used but one item we have used the exact same design is the 177 arm...the long aluminum construction goes back to 1997 and has been used in some variation nearly every year.
Will we re-use...
If the game merits defensive strength again i can say we will definitely use this years again.
Should you...You definitely need to re-use what you know or at least take the best of what you know, i mean if you have a solid drive design with just tweaking it leaves more time to focus on the game specifics..and you can let the younger kids make the system as the design is 'mostly' done giving a good way to get them involved and up to speed on how to work with metal etc..