With this hack nearing the completion, I've been running of things to say, since a lot that I mentioned has been fixed. But anyway, I'm gonna leave feedback in things that I liked first.
Neat Stuff
Title Screen
I think this was a great choice. Horlogic fits the game lore so much better than Joe Biden. I approve this choice. Also look how he's like " I'm going to stop Waluigi at all costs!"
Castle 9 (Horlogic's Lair?)
I think this was a superb level. Very fun gimmick, quick and direct to the point. These dark rexes are very dangerous, but I found them very creative. Nothing much to say, except that this level feels a blast to play.
BOSSES
The bosses that you added were also great, specially the one from the special world. I didn't play the final boss because you said that you didn't finish two bosses, so I'm going to wait to do it in the last demo.
FINAL LEVELS
The final levels just had the right amount of difficulty, with the only lacking thing being that one of the secret exits is not accessible. I'm curious to see how the lore will end.
With that said, you still need to fix some stuff.
STUFF THAT NEEDS FIXING
Spring Lawfare 2
P-switch timer of this level is too short and I was unable to proceed. Good thing I managed to recover my old srm, otherwise I would be stuck. This should be easy to fix.
Yellow Switch Palace
Using a tool called
Tweaker, to edit vanilla sprites, you can avoid players from killing the Porcupuffer by making it immune by fireballs, iirc. You should try out and see if works. Also, I think that the CFG editor, that's included with the Pixi, can do the same to the jumping lizards from Invidiary Meadows.
Green Switch Palace
It's possible for a skilled player to use the Fishin Boo in their favor using the cape and spinjumping in his head. Like I said before, I think that you can use Tweaker to change that or do something so the player can't cheese the level.
First ghost house exit is broken again
You need to fix the "normal" exit. Check the events and exits properly of this level and then, check the overworld events to make sure that it does not break. It's a long hack, I know but shouldn't take too much time to fix it.
QUALITY OF LIFE STUFF
First, you should apply
the note block / walljump fix found here. Your levels are tough and wallclips can harm and take out the fun of the challenges, so if you patch it, everything will be consistent. I jump close to walls so wallclips are common.
Second, I suggest you replace the green ropes of the level above with
an updated version of it found here. The new variant includes wings which make the ropes look nicer.
Change the title screen's "save files". Instead of Mario A, B and C, you could put something else. You could try
this patch, but make a backup of your rom first, just in case of some weird incompatibility.
Or you can try this tool to change the text.
And that's it, good luck finishing this hack.