Really like this so far, and I've only made it to Donut Plains but the added details and content are quite evident.

Hearing a new song before leaving Yoshi's Island sets a great tone, and seeing the Cape on the world map is awesome! Thanks for making this happen as a Christmas release, this is super nostalgic and very sweet!

CRC32 B19ED489 appears to work fine, for the record.

UPDATE: I've seen a lot more of this since the initial review and I still love it. There are something like 4 or more extra songs imported from remakes of this title and they add a LOT of depth to Dinosaur Land! A particularly sinister one plays during the Vanilla Dome lava stage when you're forced to dodge the Blarggs, and it's fantastic.

The world map place names are no longer all caps, and were lengthened and improved for clarity: the Star Roads aren't just numbered but have their connections listed, as one example.

Perhaps the biggest change is so well done that it went unnoticed at first-- when Fire Mario or Cape Mario are hit, you revert back to Super Mario, not the tiny un-mushroomed regular Mario! This gives the player another HP, and it's a tremendous QoL improvement imho. If you're a SMW fan who doesn't like this mechanic getting altered, then... this might be the only drawback to this awesome version of the game.

Absolutely recommended, this is a 10/10 stellar romhack that deftly succeeds in improving an already solid game in key ways.