Individual PowerBI Datasets Blending vs Related Tables Together in a single data model

Hi All , 

We are planning to move from Tableau to PowerBI.

In Tableau we have published 100's of Individual datasets as our datasource and these Individual datasets  are blended with each other as per the report requirement.

Now as per our migration plan to PowerBI from Tableau.

1. One option is to replicate what we have in Tableau Currently. Import all these tables as Individual PowerBI datasets , Build  local models using Direct query and only consider the datasets required  in a report for the particular approach.

2. Another  option is to identify related tables and publish them together as a dataset , This will ensure that for majority of our reports we can use a single dataset with live connections . We can create multiple such datasets based on our requirements 

Can you please suggest the pros and cons of both approaches, Also any alternate approach that may be better than the above mentioned approaches ?

I really appreciate the help