Hi Joshua,
There's no way to revert to the old design, it has been removed. It's just not feasible for our team to maintain features for two separate designs. All of Citrix GotoAssist is moving to a common design pattern.
I'm not sure where the icons you're referring to are. If you could post a screenshot then we can take a look and see if we can improve it.
I will raise your issues with the "What's New" section. There was not a conscious decision to make parts harder to read of course, and we did take a lot of feedback on improving spacing, sizing and contrast during a trial period. The site looks significantly different from the first take on the redesign.
As to the whole site spacing et al, I personally think it looks better if you zoom out once with ctrl+- to 90%
