Firstly, I can tell you that I am NOT experiencing any decline at the moment...
1. These are exactly the classes that have broken the game. A clear NO. And 80% of the players will confirm that. The majority have stopped playing because of these classes.
2. Why at the moment there are 12 slots and 10 classes you can play, what more could you want? Why don´t you give the casual players some room to breathe? Most chars are then used to generate Kinah anyway.
Apart from the fact that you havent even explained why this should be done.
3. Is the game like that? It is a PvP aspect and AION is all about that. AP can also be generated relatively easily. If you let yourself be permanently farmed as Genreal or higher, then it's your own failure.
Besides, you think more after a fight than stubbornly running back in.
Fix skill issues... for example..
4/5. A maximum value? That's total humbug. It doesnt help at all, except that you're stuck with the crowns you have collected or you're no longer having fun in PvP.
If you had gathered some information... you would know before your post that Tia is coming back (modified but its coming back)
6. Then you would have to solve the bot problem first...
7. You can replace it... but the scrolls wont hurt anyone.
8. Bullshit - If I have understood it correctly... But you can't be a governor with a high-level twink wearing SR gear... and then lose the same AP points... That would be unfair.
9. Yes and no... You could simply extend the actions that you can do without Siels so that you are not completely restricted.. But you have to give people the chance to make money..
10. So that you can equip your characters even faster? You know it's an MMORPG... and it lives from playing time. A lot of people cry again after 2 weeks when the next patch comes and you have NOTHING to do.
That's just my opinion. And what I can say from my 15/16 years of experience with AION... 
Maybe you should revise your list again.
