My suggestion for a dynamic flashpoint or operation...
Rhetorical question, of course you are (that is unless you've yet to hit level 50).
The real question is which would you prefer: MORE flashpoints, or seeing the developers tinker substantialy with the existing ones so that they become more dynamic, unpredeictable, and immersive experiences?
The lower flashpoints are pretty engaging overall, not too bad even if they are repeated over and over. A few of them could probably use a pass over to spice them up a bit, but generally they were designed reasonably well.
One of the problems IMO is the horrible group finder tool that exists in this game. I find myself constantly using chat to find a group instead. I think one thing that might help is an LFG tag we could wear over our head.