I am hopeful that if I am semi-correct Apple at least re-jiggered the I/O in the M2 Studio to make a single dedicated PCIe -like connection for external gpu, pci, storage.if only they made the studio an bit bigger to at least let users upgrade storage (apple own modules only) + maybe an m.2 slot and or an pci-e X8 or X16 slot.
An external Compute module will need better then just the bandwith of an TB port.