Better Skulk XP Storage

I think that it would make sense for the skulk block, when generated by a skulk catalyst, should store an amount of xp that is proportional to the xp dropped by the mob that dies on it. I think this would make sense from a gameplay perspective, more powerful mobs = better quality skulk. I doesn't have to be 1 for 1, maybe a 75% decrease in xp? This would also benefit the technical Minecraft community, being able to store the xp from a more efficient farm like an Enderman farm would be practical. Currently you'd get the same results from an Enderman farm as a zombie farm. Let me know what you think!