Here are the things I think would requre minimum effort on the part of the programmers, but have a positive impact on the enjoyment of the game:
* Separate display timing and input timing, like in DDRX. I really don't understand why this option has been neglected. If Konami is worried that this might be too confusing, then implement an automatic timing adjuster: First a steady beat of audio cues plays with no visual cues, and the player steps on the pad in time with the beat, then arrows scroll with no audio, and again the player steps in time with the beat. These two tests should be enough to determine the player's input offset, as well as tv lag.
* Let the player choose default settings in options, and get rid of the "select difficulty" screen. Take a page from my atm's book. When I go to my ATM, it knows my default setting: withdraw 20$ with no receipt, and since that's what I do the majority of the time, it saves time. If I want to withdraw 40 one day, then it's just a couple extra button pushes. It would be nice if after we selected game mode and chose the number of players/mats, the game started at our default difficulty with all our usual mods already selected. Then if you want to change difficulty or mods, you still could change them at the song wheel like we do now.
* When I play doubles, why do I have to choose the input options before EVERY SONG? This gets old fast. Especially since there are only two options, and one of them is one that nobody would EVER choose. For those of you who don't play doubles, let me explain: After you select your song, it goes to a screen where you must choose between two input styles: Using one mat or two. And to make matters worse, using one is the default. This means that before every single song, you have to select 'two mats' and confirm on both mats. Now I could be wrong here, but I doubt that anyone in the history of the world has ever played doubles on one mat. None of the ps2 versions do this, get it out of Universe. If I have two mats plugged in, and I choose doubles, just assume that I want to play with both mats, you'll be right 100% of the time. If the ability to play double with one mat absolutely has to be in the game, then at least only make me choose once instead of before every song.
I apologize if any of these have already been changed in Universe 3; I don't have it. Suggestions 2) and 3) might be convenient, but not a huge deal. The first one, however, is crucial