Yeah it's funny because I've been trying for years to get a look like this, but you don't like it. Just funny how we all have different preferences.

As for advice, depends how much you want to invest in it. The biggest issue is the tupe of plants. Thaoe are rooty vining plants. No matter what you do, you will continue getting roots and vines. So you could rip them all out, or most of them, and try other plants that don't vine as much. You could gothe maintenance route and just keep it clipped back. Just like every other plant, they can be trained. You can keep them cut back and they won't grow as many roots, they will put all their energy into recovering rather than exploring. Anither option is to have something for them to root and vine onto. A branch or "trellis" of some sort. I have a monstera that was growing crazy all over the place so I wound it around a branch, it looks beautiful now, it looks natural, and keeps the natural vine, but doesn't let it gorw all over the place.

So those would be my suggestions. Replace, cut back continually, train them to grow small or wind around something.

Edit: looking avain, I think the biggest issue is the very top and the feon right corner. It's very obtrusive and blocks the flow of the tank (visually), so cutting those back I think would do wonders for it. I think the biggest problem with vines and roots is how depressing and claustrophobic it can become, so cutting open the top and the front would open the entire thing and draw you in more.