Taking the business side out of the conversation, we all know they are a company and making money from the coiners, answer the questions asked and things can change for everyone. Why bash with negative, give them the answer you think you would like to see and if enough people reply and are asking for the same things then maybe those items will be added or adjusted.

My 2 cents on the subject - Just an idea -

1. Don't change the current payouts but:

   a. Add in ONE special daily BG that has a higher return percentage.. (+20%) just throwing that out there.

   b. One for Defense and One for Offense.

   c. Don't make it obvious from the other BG's, it should look the same.

   d. Random Level based on the player level (plvl 70 - BG lvl 60 - 70?) Again just an example

Doing something like this or some version of this would attract non-coiners as well to BG more in my opinion knowing they could hit 1 or 2 good payouts a day.

2. The rewards for BGs really kinda suck, think about revamping this as well as the whole selling of all equipment, maybe think about having grey items (No Color on them) be able to be sold or destroyed instead of forcing sale of all items. I know this is to promote buying more inventory slots but again this a loosing battle because most people won't buy them. Lower overall selling times of everything else.

3. Key drop rates are so bad that I destroy 98% of all chests without opening them, I realize this is to promote the sale of keys but I think you are loosing this battle because even people that pay money (coiners) won't spend sapphires on buying keys.

I have a lot more to say on this subject but this is my start, if I have time later I will come back and offer up more.

Q

C) Reward on the level of investment would be fine, but count the troops only.

D)

- Give more frequent smaller rewards, controlled by the banked amount. The high variance from having only big payouts matter is not good for most players. See removing "tax" on used combat strength, since any tax level will be applied more often if you do.

- have more varied troop rewards, all kinds of units coming out would be nice.

- reduce the number of daily battlegrounds if you are worried about the non-troop rewards getting too much, or troop conversion too easy.

- Write a guide regarding the most important influencing factors. If it is not an interesting part of the game to play with facts in the open, it is not a game system worth having.

I think these is all soe form of trick, a twisty lie that you are famous for telling. 

so they are no choice at all.

A) Add new Battleground levels

you just added 5 new levels. our oppinions are irrelevant.

B) Decrease the maximum Battleground level

You dare won't these will mean planning for BG will be possible, and you wish not to ever see that. Any global plan that guarantee winning is absolute to you, and you will never allow such. Who knows why till these day you are hiding behind a bubble, not from Balur but from US, your subjects

C) Increase Rewards at Battlegrounds

These we all know you will never allow. 
you said there are no rewards in BG yourself. You are confusing neophytes

D) Other (tell us what in the comments)

Fire Oberon. I myself might enjoy bringing down wrath of Woer  upon these demigod. Woer might even enjoy it.  

Change them back to the way they were to start with or get rid of them completely.

D: Just Tell Us How bg reward system EXACTLY works . i mean how u programed algorithms .

and also every1 will be happy if u increase rewards