Link Lookup table with multiple datasets in CJA Connection

Description - Unable to associate lookup dataset with multiple datasets within the same connection.

Why is this feature important to you - It's such an important piece that is missing; if this is not given, I cannot make meaningful reports or spend more time creating my mapping in CJA. 

How would you like the feature to work - Give the flexibility to associate lookup with multiple datasets. 

Current Behaviour - While setting up connections, I am ingesting multiple event datasets, a profile dataset, and a lookup dataset in CJA. However, I can associate lookup with only one dataset.