Sigh i made a super long post on my mobile and now i have to retype....there should be an ability to save the draft in case of connection issues.
Anyway i have been a long ios player who have been contributing to the game. I like to add on to the player experience as per below.
1. The game core strenght is strategy and you guys rock at it however it could be better. Master stages should be harder because i want to be challenged, and there should be different win conditions instead of killing all the time. For example surviving, protect the unit, reach the flag - broaden the creativity to challenge players otherwise everyone will just aim to power up sven. Arena could have bans or power up applicable on periodic basis to certain classes to encourage a wider usage of characters.
2. Guild events should be expanded, at tbe moment guild raid is fun but this does not really pull people togather. What really motivates people is when honour is at stake, for example guild raid. Guilds should be able to buy monsters to defend and the first guild to kill all monster win.
3. Event rewards should give out unique skins or equipements. I dont need more resources or the same hero, what i want is something that differentiate me from others.
4. The game needs more interaction with characters and environment. I dont feel attached to any characted and just use what is best for events. I want to be able to have cute interaction with characters just like fire emblem or suikoden. Features should open up as you achive more accomplishment so that you want to engage the characters and know about them more. Guild mates should also be able to visit your base so that you can show off your accomplishments. Again it is important that we are able to customize our base just like dota skins we want to be different.
5. Heroes should be expanded to wider classes, and you should have a special team to control the game traits to make sure that no single unit is gamebreaking.
6. Endless tower should be open once a day or a limited period in a week. Players defeated at a certain level can restart at the same level the next entry. Difficulty should be reduce at a certain percentage at each defeat.
I know the above sounds alot but i do hope it gives some insight to player experience and wishing you all more success