Has anyone ever up graded the electronics in their eleuke?

I was wondering if anyone has up graded the electronics in their eleuke?

I just got an Eleuke concert pineapple. I have plugged into my Roland AC-33 acoustic amp and my old Crate with DSP effects and overdrive. Uke purists may scoff, but this thing is a blast to play.

That said, being new to the Eleuke, I'm interested in what improvements you have in mind.