CSM member, Chance Ravinne kicked off a thread on the Eve Online Forum and on Reddit. The basic premise is that Data and Relic sites are pretty much identical as an activity. The location and minigame is much the same. But you need different equipment and skills - Archaeology and Hacking to do the sites.
In so much that there is any variation, Relic sites tend to be more valuable, and Data sites appear (to me at least) slightly harder to hack. So many people prioritise Relic sites and therefore Relic Skills and shipfits. I have level 5 in both Hacking and Archaeology. Depending on where I am exploring, I use either and Astero equipped with both analysers or an Ares with a mobile depot to swap the analysers around. But it has taken a long time to reach this point and learning essentially the same skill twice hasn't had a reciprocal improvement to my enjoyment of the game. The is no real sense of achievement.
So should the skills be merged? Well if everything else is to remain the same then I think the answer should be yes. But it would also make sense to merge the equipment and the sites. This would be a pity. What really needs to happen is there should be a greater differentiation between the site content. Different minigames, a greater alignment in terms of reward, and a different purpose for the loot. How many encryption skillbooks does the game need? Certainly I would like to see both site seeding lore related elements that may or may not be useful in the future or could be brought together to create or learn about some hidden facet of the game.
Anyway the debate is open so don't be a victim and participate.