1) I think it's too bright right now; it would be better to style it in the style of either the original Heroes 5 or the latest expansion, Tribes of the East.
No need for that; it's worth considering those who don't like Heroes 5. :)
2) Informational content (descriptions, library).
That's good, but... I think one person isn't enough because is there really someone who knows everything about all the games? It would be better to involve several people or assign assistants to one person in the area where their knowledge is weakest.
The database system is quite interesting and rare, but also too rigid, in my opinion. With a database score above ~1200, it's quite difficult for many to maintain a constant reputation level, let alone increase it. And it's difficult for newcomers too: to be able to gain reputation, they need 25 posts and reputation points. 25 posts is normal, but getting 25 reputation points isn't that easy if they don't participate in the internal life of the portal or aren't gaming geniuses. All of this, in my opinion, is not good.
This database (reputation) system is standard for forums like HeroesWorld. Our esteemed Creator changed it, and we got used to calling it the old database system. And now he has returned to the initial system, in which it is indeed difficult to maintain the number of "points."
6) Development of inter-clan relations (it is necessary to limit the number of clans to make life more interesting).
I still don't understand how limiting the number of clans can make inter-clan life more interesting; it's like turning a multi-party country into a two-party country or even allowing only one party. It's simply necessary to make the requirements for the clan leader even stricter.
and also - do you think that posts #2, 3, 4, 6, 7, and 8 are meaningless and don't bring any benefit?