I tried out the new cloud.linode.com control panel this evening. I agree with other posters here that the old control panel has greater information density, without being cluttered or confusing. That makes it better as I'm concerned. I looked for example for information on the currently installed kernel in the new interface, and never did locate it. It is easy to find (and change) that information in the old interface.
I'm very sorry that Linode is going down the path adopting a new "mobile friendly" interface, sacrificing usability and efficiency. Many other web-based services have already done this. For example, namecheap.com (domain registrar) used to have a very usable, efficient control panel. They replaced it last year with a "modern" new design loaded with unnecessary white space. It now takes many more clicks (page loads) and much scrolling to do the same tasks that were easy in the previous namecheap control panel.
Linode, If you really must continue down this erroneous "upgrade" path , please keep the "legacy" control panel available for those of us who prefer it.