It took the modding community barely a week to reach this first milestone.

That didn't take long. After not even 10 days, the Oblivion Remastered is already counting over 1000 mods on Nexus Mods.

This comes despite all the difficulties the modding community is currently facing, as explained by the Nexus Mods team, when the game originally launched:

Oblivion Remastered uses an interesting hybrid of two different game engines - a modified version of the original 2006 Oblivion game engine and Unreal Engine 5.3. If you take a peek into the installation folder, you'll actually find a large chunk of the original game assets still intact, including the original game plugin files.

And:

The core data for the game is still loaded from the plugin files, as with the original games; however, each game object (record) in the plugins is mapped from Oblivion Engine to Unreal Engine using JSON. This means that the traditional methods of detecting conflicts may not work anymore.

So, unlike other Bethesda games, the modding community has a higher mountain to climb. But as the mod count makes obvious, where there is a will, there is a way!