Fights are a problem in Oblivion. The engine has it's limitations and it is impossible for SureAI to solve them. All they can do -and did- is to max out the possibilities.
Some aspects like the magic and barter system have seen a seriously work over by modders in the last years.
There are some complaints that SureAI did not incorporate such mods into Nehrim. I think that there can be no doubt that it was the right decision to finish&release Nehrim instead.
You can spend infinite time to include better mods and even develop new ones but at the end it is about getting it done
before all motivation is gone. At some point you have to decide "This is the way it will be done. It may not be the best option but it works."
Nehrim can be modded and there are efforts going on to improve things.
As far as I can tell there is more work going on on complex things than on porting weapons, armor and body replacer.

Maybe we will even see a Nehrim 2.0 in some years that has the best stuff included.
The most annoying thing for me are the voices that call for three dozen mods even before seeing the in-game daylight for the first time.
Really, Nehrim is
not Oblivion - especially not a heavily modded Oblivion with a three digit number of mods.
I hope that at least the "bigger" modders play the game to its end before porting mods that change large aspects of the game.