Sure, blockades might be reasonably broken at the smaller nation sizes when there's only a couple ships to deal with, or in small scale fights. But in alliance warfare, alliance coordinated blockades are devastatingly powerful. Being able to start a war and minutes later having near every of note you're fighting blockaded is brokenly powerful. Best 4 points spent ever.
Makes fights infrequently challenging, and therefore little fun when you're winning, even less when losing.
I was chatting with Sheepy about how wars, mostly alliance wars, need to not be over in a matter of days. There should be prolonged fights, ups and downs, and so forth. We've yet to really see much of that outside of Rose v (just) EoS, before other alliances entered. So what do we do about the potency of mass-blockades at the start of a war?