This x100!
The idea of a singular "Swipe Touch Screen" that is not dynamic means that there can only be an A/B setting for the touch screen using the swipe. It is a massive loss of functionality for the StreamDeck+ vs the (horrible) provide Elgato software.
Even something as simple as a nested "Swipe Touch Screen" within a Touch Screen Configuration Group taking priority over how it is currently implemented (wherever Swipe Touch Screen is first located ALWAYS is what is used, regardless of how many times it appears in other location) would be an improvement. But I agree, the concept of a Swipe Touch Screen Left (next) trigger is sorely needed.
I have two Streamdecks - a Streamdeck XL and a Streamdeck+ -- I can't make the leap to completely replacing the Elgato software (fully controlled by BTT) when the BTT StreamDeck+ implementation is spotty like this, even though the XL implementation is perfect.