My 2 cents as new Zorro user. I run a linux distro (Xubuntu) on my laptop. Metatrader 4 as trading platform, is running quite good under wine on this machine.
I have also available a linux Ubuntu VPS server on which I decided to install both Metatrader4 and Zorro 2.09. They are apparently working well (not considering the above described issue on strategies testing). To further test if there is any advantage on running this combo on a Linux VPS over a Windows VPS, I opened a Winserver 2012 VPS (same provider and similar hardware). What I see for now is that on the Linux VPS the combo is working much smoother.
So in my opinion worth for sure to fix/develop a fully working wine version of Zorro, also considering that to run a Linux VPS is much cheaper than a Windows one.
What I noticed under linux are a couple of bugs. 1) Pressing the help button just a white page appear (even if I installed an additional software for linux as suggested from someone else in this or other thread). 2) When the expert advisor for metatrader is running, the "smiling face" on the top right of the Metatrader chart, confirming that's running good, is not visible (there is just a empty little square). I suggest to change the smile with a simply "OK" or "Running" or whatever...