How to unlock splash screen for NW also?

[ambrox62]

I've worked a bit on XML in order to unlock splash screen for NW.
Unfortunately, there is no way to trigger the screen without the setting below, but it transforms the NW in a WW:

<BuildingClasses>
<Update>
<Set MaxGlobalInstances="1"/>
<Where Type="BUILDINGCLASS_CIRCUS_MAXIMUS"/>
</Update>
</BuildingClasses>

Would be fine if someone through LUA/SDK could unlock the splash for BuildingClasses having MaxPlayerInstances="1" (i.e NW)

Thanks