The Orville is basically a passion project for Seth. He was tired that the Trek he knew was dead and there is no sign of it coming back. So he basically made a TNG/Voyager like show of his own. The name changes and forced attempts at humour make it different enough not to get sued. Honestly going by the first two episodes it has some real potential for being a spiritual successor to Star Trek, but they might want to dial back the Seth jokes. Otherwise, it really is just TNG in all but name and Shakespearian actors.
As for Discovery, there are so many things wrong with that show from the corporate politics, actors badmouthing fans and yet another retconning of Klingons that I just don't know who it is for. There are even rumours that Netflix is not happy with the show and that it's pretty much guaranteed to get canned after the first season. Thus that other Meyer-produced Star Trek show starting pre-production.
We are a long way from the glory days of Deep Space Nine and Babylon 5. But between them, I do think that The Expanse and The Orville help to scratch that itch many of us have.
Main thing I didn't like about Star Trek Discovery, is once more we're not moving forward but, still stuck w/ prequels and the alike. Like you said Klingon's revamped again, and why? Even with that set aside, I did enjoy the first episode but, if it was on TV I'd most likely find myself not watching it, like I did with Star Trek Enterprise after the first season. I just don't like prequel TV shows or Movies (Normally, The Star Trek and Star Wars Movies are a few of the only prequels I enjoy). The Orville itches the "Star Trek" itch. I'm finding that entertaining as it's just different enough from TNG, DS9 &, Voyager. Although I admit the main reasons I'm watching one over the other, is I'm not paying extra for CBS All-access/Netflix. Looking forward to the next episode of the Orville tonight.