Thanks mate.
I'd like to experiment with interjecting cards in. Normal monsters would be easy, effect monsters would be interesting. I plotted about 20 -25 classes needed (with testing, and lots of configuration options. of course with inheritance too) so I would have to abstract that. Not too bad though just a matter of well documenting things.
It may be more fun to open up the modding portion first before I add the rest of the cards.
Linux coming as soon as I drag an old desktop out..... I dont daily drive Linux but still appreciate the platform. VMs wont let me open Blender or Unity unfortunately.