I believe wormholes are too big ,if they where either smaller , or had a definitive entry point they would create a choke point . I notice from trying to catch folks at gates ,it's nearly impossible , unless they want to get caught. Im not sure the exact size of the wormholes now , but I've noticed , I'll be within jump range and have my target, to far away to effectively shoot at , be in jump range too. I believe by either creating something we physically enter , or reducing the size of the holes ,would create more tension in the area and lead to more pvp opportunitys.
Tal Ra

As it is, it's pretty easy for a determined player to blockade a wormhole. Generally speaking, it's easier to blockade the exit as opposed to the entrance.