(first)The first jump took me a few tries to get across until I figured out that I had to actually step most of the way off the ledge and then jump. Maybe you should make the gaps a little less wide is what I'm saying.
Yeah the jump is under powered right now, we are fixing this. We've decided to go for a quicker jump rather than a higher one thus we don't have to raise the whole floor above giving you less of a view. It should be fixed in the next pre-release we put on here

(second)I want more! I can see this becoming a joyful exploration game type of experience. I'd like to be able to easily see certain areas that are not so easy to get to. That would be fun.
We are toying with visibility, trying to make the tower big without being over whelming, we also don't want to zoom out too much and make some things (like spike floor) harder to see. We've got a selection of tiles we are adding in now, once we have them in and can see how easy to see they are at what sizes we should know how much of a view we can give to tempt the player into risking a few lives to get more gold (we also have full intention of rewarding some exploration with Easter eggs, cause come on, who doesn't like finding an Easter egg in a game?!)
REALLY glad you enjoyed it though, I've been nervous since I uploaded it encase someone said it was unappealing!