I also think that eventually I could have cared about those two.

*nods* I think the secret with them would have been to make it less dramatic! and overblown! and ZOMG! - because the bit where everyone mocked Paul's "the world still needs heroes, kid" and Echo was just like WTF, dude - I could see something between them then. All the faffing about with coma!Paul and their "connection" being sacrificed for the active architecture didn't work for me at all.

Alas, no. (Though we have more to go on than Firefly, and just look what people make of that!)