System preferences -> Mission control -> When switching to an application, switch to a space with open application -> ticking off may help to limit cmd+tab for current space.
Personally I've no issues with cmd+tab - I use it to cycle between 2-3 recently used apps, works fine for apps in the same space (which is the idea of per-project spaces).
Personally I've no issues with cmd+tab - I use it to cycle between 2-3 recently used apps, works fine for apps in the same space (which is the idea of per-project spaces).