New important features needed

[PerryGogas]

I am using Orange in my classes. I am a professor of Economics.
One feature that is missing and is particularly important is nodes for:

1. Coarse to fine grid search for hyperparameters
2. Random hyperparameter search

1 is the most important so that Orange can be a complete tool for ML models.
Now the models are very coarse.

Also, a way to simplify over- and under-sampling.

Thanks it is a great app.