Wait, I think I know what you're talking about.
You probably got your Gateway when it was the only viable solution and enjoyed it then... and now you see other alternatives. And I'm not talking about the fact alternatives are intrinsically better or not, it's just a matter of atmosphere.
I mean, Gateway feels like a vending machine.
You come, you have limited choice, especially if the machine wasn't filled recently and you can't request/discuss/complain/suggest anything, then you pay too much compared to a store (or compared to a free CFW which is, well, free), you're served, and they're done with you.
Free CFWs feel like your neighborhood's local store.
Just the same way you can just go to that store to discuss with your friends working there, you can see the free CFW devs in gbatemp. You see the progress they make while they're doing it. You can discuss with them. When a new feature is coming, you know it, and then you can enjoy it as soon as it's ready, you don't have to wait for a full refill of the vending machine (Gateway delaying the update to add more unnecessary features such as their a9lh implementation when all we needed was a bin).
With Gateway, there is so little communication that you can feel left out. That may be what you dislike about them (not (just) the lack of features and stuff), and that's probably why you couldn't put your finger on it since it's something that they lack instead of something bad they could have done.