If in Scotty's time they could transport 2 whales and a large volume of water.1) True but also 2) if they can block phasers they can certainly block whatever energy it takes to transport someone. So as with almost all things Borg it would work once.
Now why they didn't beam over with some really high yield photon torpedoey thing because the Borg "don't consider you a threat", I don't know. If you get one or two freebies (EVERY time!) you might as well make it a good one.
"Hmmmm. These non-Borg keep appearing on our ships." "Ignore them, they are no threat." "You know, the last time we said that they blew up a bunch of stuff." "This time it will be different." "We said that last time." "Resistance is futile." "Just by chance, did we save any records of adaptations we made from the last time we ran into these clowns? Like, to phaser fire or anything?" "Resistance is futile." "Technological distinctiveness my ass." "What?" "Nothing. Futile. Blah blah blah."
Lt. Commander La Forge should be able to transport a room full of borg and the space around them where ever he wants to send them.
Fiction is only limited by fictional canon of which some non believer human types categorize as make believe.
So who wants to see Superman vs the Borg? lol