First, Falco's u-tilt was added not because we wanted to or it was cool. It was done because Falco needed a way to get people into the air. Despite what many people think, the lasers aren't a be all end all tactic that shuts people down. You can make that argument for heavies, but that is another ball park. Point is Falco had no reliable way to get people into the air besides D-air, so u-tilt was seen fit as the move to buff.
See how this is different then giving Lucario's d-air the ability to always connect? All it does is fix a move people thought was wrong. The move still served a purpose. It can be used to stall not only while recovering but also while guarding the edge. It's ability to stop momentum isn't ground breaking, but it certainly is something. It's also not like you never saw D-air hit both times.
Sure it wasn't that reliable to hit both times, but it didn't need to be since Lucario was fine before hand. Is it breaking him? No, but it certainly makes playing as him feel easier. Lucario can stall 'all day' (figure of speech) by the edge and know that he'll always get that powerful second hit to seal the deal. The recovering person can mix things up, but only so much he's on a time limit. I used to get hit by it now and again because it was a reliable surprise attack. Now it's a much more reliable gimp and it's also pretty stupid good at preventing him from being edgeguarded if he recover high.
I also still laugh when people say Lucario's no free fall should stay because it's 'cool'. According to who? His mains? Randoms? I call bull ****. I want Ganondorf to have his sword moveset. It would probably be better then he currently is and I think it's cool. Point is, it's a needless change, but it's too late now since it's pretty much here forever. It's been around too long.
I'm ranting about nothing and I know the WBR knows I've hated Lucario for a long time so it might be bias so really so my main point is:
I HATE all these move fixes. Many of them are garbage. Brawl+ is easy to play and I'm fine with that to an extent, but when it means I don't even have to space my multihit moves as well anymore and many of main combo moves and throws are getting better at comboing I start to get a little downhearted and sad. I just feel the game is getting stupidly easy. Combos feel too free now a days since a lot of angles and throws work 'too' well, all of my attacks do what I want them to do (which yes is a bad thing) and then only thing stopping me from 0 to deathing people is a stupid good airdodge.
Basically matches go like this:
space space space, hit with the setup, insert combo with a little DI reading, enemy air dodges, start over.
I don't want melee air dodge
I don't want L-cancelling
I don't want wavedashing
I want Brawl+. I used to feel cool when I was doing everything cause I had to work more for it. I used to feel pro cause I was reading DI like a madman and spacing my attacks perfectly and keeping people on their toes with multi hit moves. Now I just feel...
If we keep going this way I feel we might need that hybrid-NADT code and frankly I don't want to add more stuff like that.
Lastly, I feel I need to say the whole reason is this stupid ****ing pipedream all of you have that we can make a balanced game. That somehow we have the power to make a game where 39 characters can fight and do well. As long as a character isn't Dan Hibiki bad they are fine. People will play them, they will learn how to use them, they will do well, and we'll all realize we got owned by a guy that used Mewtwo.