Never actually played Oblivion modded, don't own it on pc, played on xbox at release. Been many years since, so yeah, I get it being perhaps a bit murky.
I just distinctly recall it being meh with those ruins in particular, and pretty cool in other areas, zombies were cool looking (for the day), actively blocking with a shield was great, had some fairly decent designs of architecture/armor/weapons, again wouldn't say I hated it, I enjoyed it mostly, but the disappointment with it in many areas, especially in things scaled back from previous entries, stood out more than in Morrowind or even Skyrim for me, I guess.