The ability to call microflows and java actions with return types from the expression language...please
Don’t start with me, it serves as illustration
Why don't you create an object to hold all these variables? Furthermore, why would you want to model this, there are probably Java libraries available to do this for you (https://github.com/SpongePowered/noise). It seems like you're requesting a feature because you misuse Mendix.
Programming
Excessive creation of variables, for example porting the following resulted in excessive creation of variables whereas it could have been done in one statement
https://modelshare.mendix.com/models/03c3632f-58a9-4e32-a198-a57b7d04dca1/ds-perlin-noise
Here ja_and and ds_perlin_lut could for example have been used in the expression language resulting in a code reduction and faster coding
But why? The whole point of visual modelling is that you will NOT do this.