Samurai
Adventurer
Why didn't they make them a single-stat path? Because Warlocks can take powers from all paths, and they wanted to keep the choice between Cha and Con even. If they made Star either all Cha or all Con, there would be twice as many powers of that stat, making it a no-brainer for Warlocks to focus on that stat over the other.My whole position on Starlock is that I think they made a bad design decision of making a class feature they thought might be too good conditionally (Fate of the Void) and so they forced a straight Starlock build to split their point buy between two primary attack / damage stats as a balancing measure. True, there's nothing stopping one from taking powers from another pact, but it stands to reason that some people pick Starlock because - shock of shocks - they want the Starlock powers. If the ability's too good, don't nerf the class, just make that one ability less good. And never - NEVER - impose a restriction on a build option that affects the character all the time to balance an ability that is only too good conditionally. That's just silly.
They should have simply imposed a limitation on FotV and made Starlocks a single primary attack / damage stat path like Hell-locks and Feylocks. Why force someone to do contortions to meet a build concept because you feel one feature could be too good in certain circumstances, when you can simply make that one thing more limited? For instance, limit how the bonus stacks per tier (+1 per die roll per tier, or +2 per die roll per tier with Improved FotV, forcing the player to split up any bonuses between multiple rolls if more than one cursed foe is dropped in heroic, or two in paragon, or three in epic) instead of leaving it so you can apply the bonus for however many cursed foes you can drop in a round to a single die roll, and make Starlocks single stat warlocks like the others. Seems simple to me.
That said, something like your feat would be helpful. But then the warlock is burning a feat to help address what I see as a design flaw, when they've already had to split their point buy up between two primary stats, throwing good after bad. I like creating Starlock characters because of the concept... it was one of the big things I wanted to do first when I got 4e. But when I compare them to other builds I wouldn't want to actually play one. And if I build a starlock and take fey or hell powers to work around it, I feel I might as well just play a fey or hell warlock.
I'd honestly prefer some sort of revision or customization option in the Arcane Power book to the Star Pact as a whole over forcing a character to burn a feat to "fix" their AC, when that pure Star Pact character is already weakened by focusing on two prime stats when the other pacts only need one.
Alternately, they could have chosen a 3rd stat, such as Int, to be the base of all their powers. That would have made crossing over and gaining other powers even tougher for warlocks though, as they'd now have to boost 3 stats instead of 2 to have access to the full range of powers. And in the future, when creating new paths, wouldn't each of them need a new stat to keep things balanced? But there are only 6 stats...
I think it works out fine as it is, overall. There are benefits and drawbacks to choosing Int or Cha/Con.