I find it a good proposal, except for the "0" odds of loosing 1 XP for the nodes with high rep. Shouldn't there be a little risk involved? As it now stands there must be sufficient downvotes to reduce the rep of the node to below 4 * $NORM before you again run the risk of loosing XP.
in reply to Possible changes to Voting/XP
Nothing should be cast in concrete and nobody should be above criticism.
"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law