Remember how big a deal it was when they changed the classic, old school WWF logo into the modern day (at the time) scratched logo? It just fit. The new product was edgy and hardcore, so the new logo represented that new era of professional wrestling.
When they became WWE (damn you pandas!), the more streamlined WWE logo fit as well. The product was still edgy enough and the scratch logo really hadn't even been around
that long. Now that it's 2014..... it's time for a change. As most know from watching the current product, this is not the WWF/E we used to watch during the Monday Night Wars. It's not even close. The scratch logo just looks wrong.
It would be like the USA still using the old Betsy Ross American flag with the circle of 13 stars (does anyone here know what I'm talking about?

). The USA now has 50 states and doesn't remotely resemble the original 13 colonies any longer. To hold on to that instead of evolving would be crazy. Of course, our current flag still resembles and pays homage to the original flag, but has changed with the times.
The same can be said about the new WWE Network logo (they haven't officially adopted it as the new logo quite yet). It draws inspiration from the original WWF logo (more straight lines) and the Attitude Era WWF and WWE logos (the red swoosh line). Could it have been better? Probably, but all things considered, I think it's a good representation of WWE's current slogan: Then, Now, Forever.