Well I'm looking forward to Sonic Boom, it's been said that it's a "pony-esque reboot of the cartoon series" so I can only imagine what that could possibly mean. If it's written similar to MLP then hey I'm all for it, I'm guessing that it's gonna be a much more grounded, AoSTH like show based off the games, with Sonic and Co. having adventures while stopping whatever crazy scheme Eggman comes up with. With the occasional specials like maybe Metal Sonic returning and stuff like that, can't wait to see what'll happen and if they throw things and characters in from other continuities, if so then I know the show will be even more well liked.
I'm perfectly fine with Sonic Boom on whatever form it will take, but what would a more Action/Adventure Driven Sonic Show be like today? We've had Sonic SatAM, Sonic Underground, and Sonic X so far, what would the next one be? I'm guessing it'll be based off the games like how Sonic X was, but NOT how Sonic X did it with Chris and Sonic showing up pretty much only to fight. Now as much as people want a 3rd Season of SatAM, while a direct 3rd Season is very unlikely a show based off of it is possible. However it would probably more based off of the Archie Comic then SatAM, but I'm fine with that. As much as I would LOVE to see a show based off of Sonic The Comic I don't think it'll ever happen unless such a show was directly developed by a European Animation Studio. Now if we are talking not just about a Cartoon, but an Anime that's a different story. Sonic X faired much better in other countries then it did in it's homeland, so it is very unlikely we will see a show like it again. The only way I can really see a Sonic Anime being successful is if you get a big name studio and some talented writers and directors in it, maybe even Gainax? No, I'm not joking, seriously whatever studio does a Sonic Anime they should go BALLS OUT INSANE and turn it up to 11! Let Sega give a studio (doesn't have to be Gainax, it could be Sunrise, Manglobe, you name it) complete control and just go nuts!!! Hell even if it is not Gainax and there's an infamous "Gainax" Ending I will be so damn happy. 
Now how would I do a Sonic Show? Well...
Option 1: It would be mainly based off the games with a few things from other medias, most of the stories would be altered retellings of the games with several twists. For one it would be an Over The Top Show that would probably not be rated E for Everyone, some characters would act the way you would expect while others will be pretty different from what you've seen.
Option 2: It's based off of ALL the western interpretations of Sonic with it mainly based off of Sonic The Comic and Archie Sonic, with some storylines based off of the games. It'll start off as you would expect it to if you watched SatAM and then get gradually darker overtime, considering what I have in mind it would be rated T, hehehe...
Option 3: Based mainly off of STC and the Games with a few things from other stuff thrown in, and even then not how you've known them to be. It would be a rough show with an attitude, and I'd say it's for almost everyone...maybe TV Y7FV and even then it would be pushing it a little bit.
Come to think of it, these are shows I wouldn't really recommend kids as young as 6 to watch, especially the first 2 Options. I don't know why that's the case but maybe it's the push the Series really needs? I mean Sonic isn't Mario and Megaman has had several darker incarnations, I mean SatAM, Archie, and the end of STC can get and is dark but most of it is implied, in small doses, or done off camera, and even then not to the level of Anime dark action shows like say DBZ, Outlaw Star, Gurren Lagann etc. that's sometimes direct. I don't know but that's just me I guess, sounds pretty damn cool though doesn't it? I guess I'm just the kind of guy that wants to adapt a video game series, use every resource the series has under it's wing, and tell a story that I think would be awesome to see!
Seriously, HOW THE HELL did nobody know that Robotnik was evil!? I mean just look at those red, glowing, hellish eyes, oh yeah I can completely trust that guy with my life! *sarcasm*