Moar struts!

[RAC]

You know how when you connect a part with distance between, you get the thin metal connection between them. Maybe make those standalone parts, which connect twice, so you could add structural integrity along other axises between parts. (like struts in kerbal) 

[Lurkily]

The issue, as it's been explained too late me, is that multiple and potentially circular connections can make physics potentially much more demanding than any benefit would justify.