fair warning: being a fan of the first two Paper Marios isn't the best reason to get into Super Paper Mario. Super Paper Mario is a great game in its own right, with a surprisingly deep plot, but it is a LOT different from the other games in the series, so if you go into it expecting that, you'll probably be disappointed and be unable to appreciate what does make it good.
I understand what you mean. The thing is I ended up not giving Super Paper Mario a chance because I was so into the first 2 games but in retrospect now I feel bad not giving it a fair shake for being different. At the time it came out I kinda felt betrayed but now I think I’m way more open to it being different and weird. C: