...makes you run much slower ...
Yes, I've done the same thing for my game. I've combined that with another mod I made which eliminates Oblivion's near-infinite view distance, bringing it closer to the fog settings found in Morrowind. Together, these mods make Cyrodiil feel much larger and almost as full of mystery as Vvardenfell.
I not only use collections of my own tweaks but I am also an inveterate, compulsive tinkerer of other people's mods. It's practically territorial marking. I'm not content until I've put my stamp on a mod. I wasn't content until I moved Princess Stomper's Imperial City Apartment from the Talos District to the Market District, to name just one example. I also love to combine mods, such as making OOO use Warcry's greatsword meshes in place of the vanilla ones.
I can spend weeks in the CS tinkering and tweaking and adjusting all of the mods in my list before starting a new game. I actually have begun to think of this process as an integral and necessary part of playing Oblivion.