In the old games, they really couldnt do too much to make the gyms look flashy like they do now, mostly because they had very lesser quality visuals to work with. Now they've made each gym fully fleshed out as individuals. Each gym shows clearly what type they represent, rather than maybe a few trees in the grass and bug gyms. Goldenrod City, Olivine City, and Ecruteak's gyms are in my opinion the best renovated gyms in Johto. As for Kanto, the gyms all pretty much look the same as they did in the original games, with the exception of Erika and Misty's gyms. Blaine's gym i find to be interesting only because its so subtle you might not notice it entering the Seafoam Islands. Unlike the old games, where it WAS the only thing in Seafoam, its a tad more interesting.
