Do you feel it puts you too high in the seat because the steering wheel is too low? If that is the case, the newer (2017+) models have a taller (deeper dish) steering wheel which allows for a more upright seated/steering position. As for the wobble, might I suggest a galvanized rubber hockey puck (yep ice hockey puck). Drill a hole through, bolt/washer/nut and done. Puck (or a 10-pack) is much cheaper on Amazon than trying to use a poly bushing or bumper.
I use hockey pucks for jacking of vehicles (saddle and pinch weld), I replaced the crappy rubber feet on my generator (these won't ever wear or degrade), fixed wobbly items on uneven surfaces.
Guys, I didn't wanna turn this thread into my personal diatribe about all the things that bug me about it, but since you asked...
First yeh, the seat wobbles too much. I got inclines and ruts and all sorts of other fun stuff in my yard, and all that stuff needs mowing, takes me like 3 hrs to do it. Just wobbling around is no fun, but added to that, the seat shifts a bit, too. You know, the rotating mechanism in there, it allows for some rotational slop even when it's locked down. It's not too noticeable riding on a nice flat lawn, but I certainly notice it after a while on my terrain.
Another thing, yeh the steering wheel is essentially on my lap, so obviously that's no good. Adding to that, I'm a little guy, only 5'7", and although my feet do reach the foot wells, they're not as squarely planted on there as I would like, with the back of my thighs taking some pressure from that seat.
So, after a few hours of me wobbling around, bouncing and shifting on that seat, thighs taking shade from both the seat and steering wheel...basically all that sux. But also, I just flat out dislike sitting so high up on the tractor. I'm driving up hills and stuff, wobbling around like a pop-up toy, screw that! I wanna sort of sit "in" the tractor so to speak, like I do on my craftsman gt.
And finally *grabs tissue to wipe away tears* I don't like that turn mechanism to face the backhoe, the whole thing feels really janky to me, requires too much effort, and when I do sit facing backward...again I'm short, and my feet aren't as square on the footwells there as well.