In my opinion Serengard has the potential to become a great map, but right now it has too many flaws compared to other maps.
It has no outstanding reward like a high amount of Mitrhil Shards or Immortal Weapons/Glyphs etc. Even the map specific legendaries are all underwhelming.


To specify the issues and offer some solutions.


1. Mithril Shards rewarded are still too low. I know it got buffed some patches ago, but compared to Redfall Ridge you get way less shards. Also Redfall Ridge is easier, way faster and has less RNG compared to Serengard. So i would propose a buff to Mithril Shards, like 50-100% more.


2. The first 30 waves before endless are boring, unrewarding and time consuming. But you need to do them if you want to get the key to directly start with the endless waves. Other maps like Redfall or Tanari award the Upgradestone while playing on the increased difficulty. On Serengard on the other hand you are forced to do the first 30 waves.
So my proposal would be to also reward the Upgradestone after a fixed intervall of waves. For example every 30/50 waves awards an Upgradestone to all players.


3. Add the blacksmith to the area.
Also add the possibility to manually start the next waves. Righ now every 5 waves you are forced to wait 60-90seconds until the next one.
My solution would be to make an activation circle like on many other maps (Standing inside for 3seconds starts the next wave). So you can choose if you want to pause or directly continue the waves.


4. Map specific legendary drops are very underwhelming. Just to name a few:

Phoenix Emblem is a worse Ankh of the ancients or Flower cache.
The trinket which buffs str,agi,int and all attributes is pretty much worthless. (Sunstone or something like that)
Radiant Ruins Leather is also underwhelming.
And this applies to the rest of the items aswell.

So my proposal would be to buff or rework all of them.
Like giving some of them a 3 or 4 tier rune. There are only 5 items that can roll Q3: http://roshpit.wikia.com/wiki/Immortal_Items,_which_roll_3rd_and_4th_tier_runes.

Or buffing/reworking their current effect. For example:
Swamp Doctor's Tribal Mask: Heals you and nearby allies for 40% of the sum of your attributes every 0.5 seconds.

Additionally to the current effect:
1. While at full health Damage is increased by XXX
2. WHile at full health gains a shield that reduces the next damage taken by XXX sum of your attributes. 5 second duration. 10sec cooldown.

These are just some quick examples. There are many different ways to make the existing items more interesting.


5. In my opinion you should address the permastun issue. On many other maps it's not really a problem, but on Serengard you can get permastunned until you are death.
This is kinda frustrating. So maybe add a short immunity after an amount of time stunned. For instance after being stunned for 10seconds, 3s stun immunity.