That is a massive post, wow. Before I get to the actual post let me share a couple tips for future posting that will help you in making posts people enjoy to read. First of all, you want to split up your posts into paragraphs, like this it's much simpler to read them and users are more inclined to having a look, big blobs of text always scare people off. Secondly, make sure to double check as much of the spelling as possible, I understand that the English spelling and grammar can be complex, I've experienced that first hand but you can easily double check how names of Heroes are spelled.
Now, to look at your post. Which is massive so I'll try my best not to miss anything. From what I've gathered your proposal is to increase the strength of Sauron's Shadow and Flame forms, tie in his level up to the number of kills and fix the War of the Ring system.
Let's start with the simplest one, the War of the Ring Sauron. Indeed at the current time there is quite an issue with the WoTR, its not very compatible with the way most factions are meant to be played and quite buggy. However it is unlikely that major changes will be made to features of a faction solely for the purpose of fixing the WoTR feature. At its core, the mod aims to balance and introduce new feature meant to be played on regular skirmish settings with a 1000 resources start. Keep that in mind for further argument. That's all I have to say about that aspect of your proposal, the only one which I can tell you immediately is likely never to happen.
Now, you say Sauron is weak, weakest of all heroes? Indeed he is, and yet his power knows no bound and his might no limit. Two key things make Sauron one of the most powerful heroes: his initial cost is a 1000 resources, making him the only non-scout hero which you could technically rush right off the start (although its not recommended strategy wise), the second thing is that once bought you will never have to buy him again, he is a one time investment that will last the entire game. All the other heroes you mentioned can be killed (apart from Oakenshield at the moment
) and once killed they cost the player a fortune to revive. I also disagree with your statement mentioning that Gorthaur is underestimated, last time I checked his abilities were enough to rival even the greatest of hero killers. And his health bar would make even Oakenshield jealous.
All the heroes you've mentioned being more powerful then Sauron are much more expensive than him and can be killed. Shadow/ Flame Form Sauron was never meant as a mass slayer or a hero killer but as a support unit. Which is why he doesn't have that much strength. Another major benefit of the current system, is that even if you recruit a Ringwraith extremely late in game they will instantly gain all their abilities, unlike other heroes who would have to level up slowly.
In general, I disagree heavily with your proposal, although I have a lot of respect for the effort you put in it. Sauron's concept is both incredibly interesting in addition to being a solid system that works well in the game. As his power (and the power of Mordor) is restored by his servants they are imparted more strength and gain more power. If the Edain Team was to improve the strength of Sauron he would become much too powerful because of his cheap cost, the role he plays, the benefits he provides and the fact that he can't actually be killed.
This thread has been moved to the Mordor Suggestions board. Now, I presume the real Necromancer will soon show up and reply himself
Looks like somobedy has spent too much time with the forces of Darkness to be able to predict their actions so well