Considering that the author mentioned that "Tower of God" is only a part of the whole "ToG universe", then of course it'd be really interesting and I would love to see the series continue through the years. There are plenty of parts missing, unexplained, or 'forgotten' in which the author lapsed to make a better description/understanding about this or that. I'll be frank, it isn't as bad as the others say, there is development in some aspects, and some still don't have such as in romance, since the MC himself doesn't even see the end of his current goal, which is understandable.
It is a good read and a classic at this point, I've read this along with Noblesse since highschool until college, trust me, it's worth it.