NEW TOWER MECHANICS!
Each team Nexus have the same amount of defence power, and this energy is divided between the team captured towers. This translates to:
* The fewer towers you have the more powerful the towers are.
* The more towers you have the less powerful the towers are
The re-spawn timer is to much of an advantage late game, this would give the power back to the stronger team. It does this by eliminating the problematic "zerging" effect of short death timers, yet provides the opposing team, with less towers, a chance to capture again.