Clan Wars PVE

Something similar like it was in RS2, just with less
people. Because we don't have many players.
It should be 5 players in each team, 2 teams in total and
the level different max 20 levels.

So how I see it:

5 players appears in one side, other 5 players in other side.
In the middle you have two "Bosses". One for each team.

Main goal is to defeat "Boss".
To get to the boss you have to pass thru other monsters.
Basically those monsters should defend their Boss.

So after players killed all monster they should be able
to attack Boss.
(To kill boss it might be difficult because of 3 combat system,
but everybody should have range or magic. We can have some kind of cannons who
can help that guy which is fighting boss.)

First team which kills Boss wins.

Reward:
Winner team gets XP card which they can use it on att, def, str or some items (we can decide).
Loser team gets XP card, but with less XP than winners.

Of course here is a lot of details need to be solved,
but I am talking about consception. This should be a fun way to grind XP
instead of clicking on monsters for many hours.