Any way to enable Biased RNG for multiplayer games?

[HollandOats]

I've started playing Wesnoth again after a long while and have been loving the Biased RNG setting in the campaigns. However I've also been trying out the multiplayer with a friend and couldn't find any way to use it instead of the default RNG when creating games. Is there any way to enable Biased RNG (or an Add-on that does something similar) in multiplayer or am I stuck using the default RNG?

[gfgtdf]

Iirc it was a intentional choice not to add an option for it, because it makes cheating easier (because it used deterministic rng) and also because it changes balance (for example elvish shamans have a 100% (instead of 75%) chance to slow the enemy on 50% defense.

On add-ons I'm not sure, there probably exist some