That would damage their brand.
ECW could never afford the same level of titantrons and fireworks ring intros as WWF/WCW so Paul Heymen was smart enough to understand that they shouldn't try and be a watered down version of the mainstream. Instead they focused on content. Thats what the 5150 show does, content... minus last week's shenanigans.
But breh, this is starting to remind me of WCW towards the end at the rate this is going.