Super Mario Maker - BiSiPi

[Jermungandr]

Finally! My chef d'oeuvre is complete! Behold, every stage from the NES version of Bubble Bobble done in ten parts:

Bubble Bobble - Part 1 : 4976-0000-007E-0760
Bubble Bobble - Part 2 : 9E40-0000-007E-079E
Bubble Bobble - Part 3 : 59A6-0000-007E-0815
Bubble Bobble - Part 4 : A219-0000-007E-085F
Bubble Bobble - Part 5 : 31B8-0000-007E-0885
Bubble Bobble - Part 6 : B540-0000-007E-08FE
Bubble Bobble - Part 7 : E508-0000-007E-0939
Bubble Bobble - Part 8 : 7772-0000-007E-0965
Bubble Bobble - Part 9 : 4625-0000-007E-09A5
Bubble Bobble - Part 10 : AF92-0000-007E-138B

Here's a DLC idea I just had:
Boss Door: Takes you to a sub area different from the one the Warp Pipes take you. Defeating all enemies in this area counts as clearing the stage. Can be used as the main goal by making the standard goal unreachable, or as an alternative goal.

Here's an alternate idea: The "Magic Ball" item from SMB2 (dropped by Birdo), SMB3 (dropped by Boom-Boom), and SMW (in the sunken ship). Picking up this item normally clears the stage. However, it can also be placed "inside" of enemies, who will drop the item upon defeat. Enemies with this item placed inside of them will have a visual effect to let players know they are holding it, saaaaay, perhaps turning gold and glittering?

If they wanted to go the extra mile, they could also make it so that when minor enemies are holding the orb it takes more to kill them. Three stomps instead of one, multiple fireballs to kill them.