It's really nothing new.  People were doing that in AW in 1995.  New players kept coming.
Are players still coming and staying or are they leaving?
WBs had a system similar to what I had in mind and players kept coming.
The fact is, this arrangement encourages and REWARDS ack hugging.  That's not good.
I don't like ack-runners any more than you do, but it's been a part of the game forever.
- oldman
Then let them run but don't reward them for their cartoon cowardice.  Hitech made a similar change that has almost eliminated BOMB AND BAIL griefing.