Hi (and sorry for bad english)
Megaman2 is the best NES MM, maybe, but it have one failing: its menuing is horrible and menuing is central in megaman serie.
I made a little hack just for correct MM2 menuing (and only that). I transformed the multi-page 1D menuing (up/down) to a 2D menuing. There are two changes:
-- Now just push "right" or "left" to switch between weapon/item pages (the "NEXT" command is totally off)
-- Push "Select" button to quit menu and automatically equip the buster (shortcut).
An example (switch between Woodman weapon and item 1 for cross an obstacle) with picture
Patch for US ROMhttps://drive.google.com/open?id=0B399kteofpYuYTR4Z2tuMFBsS00
Patch with cheat (all weapon/item) for testhttps://drive.google.com/open?id=0B399kteofpYuT2MwckRQR0RlZ28