I did think that about the lack of climbing, I'm at work all week so will be going to my lfs at weekend to look at some wood, I've got lots of time to sort hardscape out.I’m not well versed on tree frogs if that’s the intended inhabitant. But I’d be worried that the hardscape is a little limiting and a lot of open ground space has been left.
Are waterbowls necessary? I know with Dartfrogs they can actually pose a risk of drowning and they drink droplets from leaves rather than a water source like bowls.
Yes a water bowl is necessary (as long as it's not deep enough for them to drown) as they like to sit in the water to help hydrate, plus you need one for tadpoles as they lay eggs on plant leaves which overhang water so they drop in when ready.