Right now some cross-class skills are completely useless (i.e stoneskin - 10% dmg reduction on 3sec cast time is quite bad tbh and even for WHM the cast time makes it not quite worth the 18% reudction especialy with the server delay - EU servers in NA - nearly impossible to time it properly at some fights to make it useful).

My question is: are there any plans to make some spells valid (as some Jobs just doesn't have any choice regarding crossclass spells - like WHM with Thunder)?

Regarding Stoneskin I think making the effect 18% for all classes and giving WHM -spell cast speed would solve that spell. Are there any plans regarding the cross class spells?