I don't really want a faster manner of gaining exp for now..
I was solo lvling my MRD from lv19 yesterday, now it's lv22

I'm leveling it keeping consistent chain 4, against the crabs in Bloodshore.
And I was even fighting multiple of them at lv21 (Their lv range is 20-22), keeping the chain 4 going in the meanwhile.

Keeping a chain 4 while solo probably means a extended time or level range for chaining is not really needed..
Or else we'll really see all gears of lower levels being useless, as you can level up even easier after it's being adjusted that way.

P.S. I switched 2 weapons for my MRD for a better one, none of them reached 40% spiritbond yet..
I think for main hand weapon,
(As it wont be shared by other classes to make the spiritbond quicker to fill up at that level)
the exp needed for a 100% spiritbond should be at least accomplished within exp required for the class to gain 2.5 level

This way the player is given an opportunity to remake & meld the weapon, and perhaps it could be an alternative choice to make the chain a bit easier for players as well.