I got the Weber Genesis 335 with the Crafted frame last year and was so impressed with the crafted accessories I got for it to use on the Genesis, I bought the Crafted frame for my Smokefire EX4.
The half size crafted plancha/griddle on the Smokefire is a brilliant addition for it and is an ideal size for just the 2 of us (but will probably look at the full sized one if it fits both the Genesis and Smokefire Ex4?
I also have the Crafted sear grate, the new glazed pizza stone and the rotisserie skewer set (Genesis only) in the crafted series so far and all my old GBS accessories, I previously owned are compatible with the Crafted frame
The only problem is my EX4 came with the GBS grates which are centred and the crafted frame sits either to the far left or right of the grill making my current grates incompatible with it, so having to look at buying a new full set of specific crafted grates for it, which don't come cheap. It's a shame they don't just sell the smaller of the 2 crafted grates separately, as that's all I'd need to have a full working surface really with the frame and the small grate and then just put the old GBS grates back on when I don't need the Crafted part.
So currently just use the crafted frame with the accessory on my Smokefire at the moment with a gap where the smaller of the 2 grates would go
Weber know what they're doing though and can make extra money by only selling the full grate set up
If I'd bought a new Spirit with the Crafted grates rather than Genesis then the crafted grates and frame would have been interchangeable with the EX4, but didn't buy it at the time for the Crafted side of it, I wanted that Genesis model as it was on a massive misprice (which they honoured) Sells for £1600 over here but they missed the 1 off so got it for £600 and Weber were offering a free Rotisserie for the Genesis with purchases at the same time
But all in all I love the idea and implementation of the Crafted set up and they work really well on the Smokefire and Genesis set up. Hopefully Weber continue to add accessories in the Crafted series, looking at getting the crisping basket for the rotisserie on the Genesis next for chicken wings etc