Hello @webworkshop, welcome!! 
Regarding the multiple links it’s not possible to have duplicate and yes the modular block with a single field inside is how you currently implement the “repeater” field (look here: Nested Blocks - #9 by matjack1 and the rest of the topic for more details on what is currently requested).
But you can drag and drop if you collapse all the blocks first. If you click on the three dots on the blocks you can do that. Collapse all blocks and then drag and drop.