As the hack speedrunner who put Rolling Thunder on Speedrun.com I have always wanted to see Rolling Thunder 2 and 3 hacked so that the player movement is as equally speedy as the original (on NES), with no accel/decel cycles whatsoever. The slowed gameplay style of the sequels really takes a lot of the fun out of the game in my opinion, and playing them is like reading a kid a bedtime story as opposed to reading a thrilling novel.