Could you pastebin me your JSON ([email protected])? 2k of simple (`{"1": 1, "2": 2, ...}`) lines seems to work fine (slight delay) for us. Maybe your JSON is super complicated.
We can work on improving performance if we have 1k+ lines of super complicated JSON to mess with. :)
The difference between Jeet and Foundation's grid are two things.
1. Jeet uses actual columns whereas with Foundation you need to nest elements within elements: http://imgur.com/a/OWyOQ
2. @include grid-column(4) isn't as "on-the-fly flexible" as Jeet since you have to define the base number of columns in Foundation whereas in Jeet you could just say @include column(4/12) or column (1/3) or column(33.333333/100), etc. - being able to say in natural language what you want your container to do is pretty powerful stuff.
Theorizing, but I suspect FB will begin targeting and picking off IP of apps built entirely on React stacks in a few years.
Please don't go back to them. Just contribute to Vue's ecosystem like crazy. Worst case scenario it'll keep FB in check.