I haven’t looked around to see other suggestions……….
My only problem with WvW is that the week long battle not leading up to anything. You know about how well you will do in the first 2-3 days. I’d like the whole week to remain relevant on every server involved (whichever timezone the players are in).
I think it can be done if the scoring timer changed as the week counted down to Friday night. Maybe the starting score period (i haven’t done the math) count be around an hour…speeding up (counting down) to a last scoring period of 3 minutes…..or something like that.
I think this is pretty easy (without knowing anything about game design 
…) to implement as the time was just changed at launch…..you could even make it super simple — and the timer change doesn’t have to be logarithmic just be shorter on each next day.