I came away completely unimpressed with islands of adventure when I went 3 years ago. I'd be interested to try the original park someday though. Not in the plans for this year's trip though. I am looking forward to the mine train, but not in a thrilling way. I've lost my taste for thrill rides anyway.
What didn't impress you? The lack of Disney characters?
I'd love to know what is amazing at WDW, yet completely lacking at IOA. Besides a mouse and his prude girlfriend, I don't understand.
I mean, I agree that projected animated faces in a kiddie coaster are much more impressive than perfectly synced 4k superhero imagery in a huge immersive environment, but was just wondering what you found subpar in comparison.
-Jason

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It isn't meant to be that way. Does Space Mtn. thrill and excite a 2-3 year old?