I am VIP 9 on server 2. I agree with everything you have said!
I would like to add a few more places of improvment
Gree keeps adding new heroes and new skins but many heroes dont have legendary skills yet. I feel like time should be spent on new legnedary skills and quest instead of nee heroes. We have gotten any skills in a couple months.
Many people have bugs with the in game chat. Myself if i have an error and try to correct it many times it jumps to the beginning of the text box. Making it difficult to type anything.
Related is PM, we should be able to delete or archive old private chats that we dont use so we can more easily find the ones we need, espically when any new post in vip, guild or global will bring it back to the top of the chat list making finding a specfic chat in a long list frustrating.
modifiers:The have been interesting but the orginal ones havent been seen since the new difficultly in expo. It would be better to have all of them for more variety.
Rewards: i have been in some guilds with low level players who try in war but dont get a single win all week. Sometimes they are great in strategies to deenergize line ups and yet they get absolutely no tokens or rewards even if the guild does great. They try they should get something.
I think you should increase the rewards for every level a bit to make getting heroes soulstones easier. Then shops can contiune to be seitch frequently and help with the excess heroes you guy keep pumping out if you keep insisting on doing that.
Level cap and promotions
Both of these have been happening too quickly. I cant keep up at vip 9 and there is getting to be a bigger and bigger gap between people who pay a lot and those who pay medium to no money on the game.
Decrease the jump in what it cost to spend diamonds, it doesnt have to double each time. I would be much more willing to spend 150 on stamina then the jump to 200. Decreasing this will may reinvigorate players and knowing the buck is going further would probably convince some to spend more money in the game.
I am sick of seeing the "down for planned maintenance" message. If it is planned notify that it will be down, if it isnt dont call it planned.
Something i think you guys are doing well on. The change up of the heroes in shops have been nice to increase my hero stars, i still have a long way to go, but i dont ahve any 1 stars and only a few 2 stars thanks to the rotation. I do like the decrease stamina cost but vip memeber who previously didnt run out shouldnt be running out now. You do introduce interesting characters, the creativity is really well done.
I do love the game but i am sick of being frustrated after every update because what players keep asking for (same things OP posted as well as what i said above) keep getting ignored.
PLEASE PLEASE PLEASE GREE LISTEN!!!!!!