I will take mine to a level beyond the SEs and see what that does. Should be fun, informative, and a labor of love.
This was kind of what I was thinking. Should I ever care to upgrade, why spend all of that extra bread when I can upgrade to something greater than the DI SEs just with wires, caps and do-dads, never mind a change in woofers.
I'm a long way from anything like that, but I hope you stick around, or perhaps be available to bounce ideas off of.
I would be interested in hearing about your labor of love. :-)