Hesitating on checking it out right now. The several videos I've seen depict a worthy successor of FSX, in that it just shows too much of FSX in it. The handling of the planes feel a tad too linear and easy, the graphics makes you nostalgic of the FS2004/FSX era, and some parts of the engine are barely changed.
That being said, it is a worthy successor in that it leverages the good parts of FSX while (at least promising for some parts) changing the bad. The interface looks sleek, the graphics updated (PBR shaders and cockpit shadows makes for a much better immersion - ORBX made scenery pops out like you would expect and the rain on the windshield is top notch), and the plane designs are that of paid addons on FSX, with fully working cockpits entirely 3D modeled down to the details.
There is not a lot of choice and 3rd party support is not yet on, but it is a first EA release and 3rd party is planned.
I don't know if the price is going to increase throughout the early access campaign, but at $25 now I'd say it's something to consider.