My experiences so far with FWK have been a little mixed. I've made the following kits...
Forte Petite Sirah w/ 2 skins- made to directions. At 15 months it is still a little rough and bitter. Not as smooth as I would like.
Tavola Cab Sauv w/ 1 skin- 3 week EM. At 13 months it's OK. Not horrible but a little lack luster and not as big big or bright as I would prefer.
Tavola Cab Sauv w/ 1 skin- made to directions. At 12 months it's very similar to its sibling.
Forte Super Tuscan w/2 skins - 4 week EM. At just under 12 months it is decent but not impressive. I'm hopeful that it improve over the next year.
Tavola Sangiovese- made to directions but added FT Rouge, opti-red, 6 oz dried currants, 2 oz dried cherries, 2 oz dried blueberries. At 9 months this one is surprisingly good. Fruit forward and smooth.
Note that I added Color Pro during ferment to all but the PS. I also started using 1 oz glycerin/gal at bottling and it seems to help smooth edges. Additionally all kits were oaked in secondary with what came with the kits or 1.5 oz medium oak (American oak if I recall correctly).
I also did some blends. My 50/50 blend of the first Cab and Petite S is quite better than the two individual veriatals on their own. I also did a 50/50 blend with the second Cab and the sangiovese and it is very good. I recently shared a bottle of that cab-giovese with some friends and they were very impressed. We followed my bottle up with a commercial wine and mine was far, far better.
I'm going to use the mixed fruit and tannin additions again on some other WE reserve kits that will end up blended in my barrel. Im curious to see if I get similar results. I like strong, big bodied wines as long as they have enough flavor to offset the tannin/structure. Big, fruity and smooth is my preferred taste. The Forte kits I've made are decent but kinda rough on the edges and lacking flavor imo.
I have 4 other FWK to still make. A Tavola Merlot, Forte Zinfandel, Forte Southern Rhone and a Forte Sonoma. I'm hopeful a few minor tweaks might squeeze more potential out of them.
I also have a FWK blueberry currently in secondary. I honestly have zero expectations from this other than I hope my wife enjoys it.