Open high rate , with good loot rate like x4 or x6 and fast mana regeneration.
Maybe you can open orshabaal xD
Change speed formula lvls to very slow and mana to use best spells like ue , waves etc then people can run here on lvls 300 or more and game can be longer.
Make mana to use UE like 3000 , Mas pox 2400 , mort hur 1800 , gran vis lux 1600 , paralyze rune 2900 , etc
Game then can be longer and people no spam on high lvls many spells , and still new players can easy join to wars.
Then rpg noobs no cry much when they die and no leave server like on every low rates server.
I think then people play more long time when see how fun when you kill 2-3 monsters and have 1-2 lvls for it.
At wars people have big lvls and can't spam many best spells and must use more runes to fights.
[Experience stage]:
1. Stage : Level 1 to 8 : 60x
2. Stage : Level 9 to 40 : 200x
3. Stage : Level 41 to 80 : 120x
4. Stage : Level 81 to 120 : 90x
5. Stage : Level 121 to 140 : 70x
6. Stage : Level 141 to 160 : 60x
7. Stage : Level 161 to 190 : 40x
8. Stage : Level 191 to 200 : 20x
9. Stage : Level 201 to 220 : 18x
10. Stage : Level 221 to 240 : 14x
11. Stage : Level 241 to 260 : 12x
12. Stage : Level 261 to 270 : 10x
13. Stage : Level 271 to 280 : 8x
14. Stage : Level 281 to 300 : 6x
15. Stage : Level 301 to 999 : 4x
Then the server would be easy and pleasant for everyone:
Pvp players would have more frags to use, rpg players could explore the whole map and not cry when die, and pvp players can fights all the time and it would be more interesting than boring low rates , runes farms and exp on rotworms with use war hammers and one fight in 5 days.