I guess it all depends on what you would like to do with those sets. I have kids and so they play with City, Friends, Sponge Bob, Monster Fighters etc. Sometimes our Lego town will include all of them together. When I bought Creator Seaside House, I did not expect it to blend in so well with ... the Glove World from Sponge Bob. I do not like Sponge Bob theme, so I removed the characters, but left the Ferris Wheel and ticket stand/ ice-cream booth. The Creator Seaside House has the same color scheme and if you build a variation with the small house and the drink shack, combined with the Glove World it makes a nice little theme park. We added Friends Heartlake Vet set to our town too, but it was separated from the theme park by the road plate and it did not look too bad together. No, it was not seamless look of a street made entirely of Lego modulars, but for playing and not displaying it looke fine. I actually want to add Creator Lighthouse to our town now, I think it will still look fine.