A system we can upgrade item level along with required level, each time you upgrade, current required level will increase to the next required level (15 to 40, 40 to 75, 75 to 120, 120 to 170,…)
ex: if upgrade arde dagger, required level will increase from 75 to 120, item level increase from 15 to 65
Why we need thhis feature? because there are a lot of nice item with nice effect and sub stat but unpopular because of low level. This feature will make end game gear not limited only for windia rod, silver hawk… make player have more option when choice their end game item.
Lke this: Vubbe Morning Star (https://tos.neet.tv/items/203105)
-CON 6
-Magic Attack 29
-3% chance to inflict [Stun] on an enemy for 3 seconds
Or maga rod which very nice for sorcerer, vine boots which give +1 movement speed…
And this feature should limited to purple and orange item only, make item grade more important, and people can not upgrade grand cross or cafrisun set since we already have didel grand cross and manaha.
For amount of item level increase, its my idea:
Required level /Item level
1 => 15 /+10
15 => 40 /+20
40 => 75 /+20
75 => 120 /+30
120 => 170 /+50
170 => 220 /+60
220 => 270 /+60
270 => 315 /+80
315 => 330 /+40
So if we upgrade a Maga Rod from level 170 to level 315, its item level will increase from 190 to 390, its item level sill lower than original purple 315 item (and sub stats too) so high end gear will not obsolete by lower-upgrade item (even level 330 lower-upgrade gear can not compare to 315 original because of their insane sub stats).
Some item with overpower item level/required level like Ledas Shield will have their own difference chart.