I frequently do metric/english unit conversions by using two SQLTags pointing to the same OPC tag with one scaling the for units. The displays then switch between the two tags based on a Client tag. There is no way of doing this using memory tags that scale the same value without resorting to scripting.
I propose an “alias” type SQLTag that points to another SQLTag but has scaling and other metadata. It would be nice for OPC tags too since if two tags point to the same OPC path you need to change both of them if you need to change the OPC path. With “alias” tags you would only have to change the OPC path for the “base” tag. Even better if you have more than two scalings (e.g. Celsius/Kelvin/Fahrenheit or g/kg/lb)