Yes, we need some sort of greenhouse system for apartments so that they have access to crossbreeding gardens. However, I think SE mentioned that crossbreeding actually ties in to the weather somehow so they'd need to sort that out. It might be a slightly bigger project.

Workshops are actually easier, since they're an instance of their own. They could put an entrance anywhere (say, the same door that leads to your squadron in the GC) and allow FCs of rank 6 or higher to pay the fee to gain access to one. Very little work required as far as I can see (though there may be hidden complications - who knows). I really don't understand why these have to be tied to houses at all.