I don't believe a block logging plugin would really do much in these situations; There are actually things that can be done to prevent this from happening. @Shadowlegendz This will be fixed when factions is released, i wouldn't worry about it really.
Well if you log in and you have been raided but there are no holes in your base it seems this would be the only solution to find the culprit. I know you are probably thinking more of the "prevention" side of the issue but as we all know people always find a way to glitch into bases. This would identify who glitched. It also is valuable in finding people who use x-ray.
We can look into doing this if it becomes an issue. X-ray resource packs didn't work in 1.8 with anti-xray last i checked.