Sorry to revive an old thread, but I think it gains new relevance now with CP Extend being released on Steam, so I would like to also add my two cents as a new player.
For the new generation of Steam players, we basically had to go from CSE straight into CPEX, and the changes are bewildering. Unlike the console players, who got a long period of time to enjoy CP Mu with properly functioning Steins, we never got to enjoy that and we didn't get a chance to properly abuse the "laser fortress" before it was taken away.
In the earlier part of this thread, some identified "laser fortress" as oppressive/difficult to deal with/annoying, which is probably right. However, there could be a better way to fix that rather than entirely dismantling a character's playstyle. Regardless of whether CPEX Mu is good or bad, the changes to how Steins work are too radical and alienated a lot of Mu's older playerbase that enjoyed using her as a zoning character. The ones who still stayed had to go through a painful relearning process and give up on beloved old tactics.
Instead, they could have implemented something like a Stein/Azure meter that would run out if she does too many consecutive Stein sets, and thus create a gap in the fortress. I think this would be a less disruptive fix, and could integrate well into the game's mechanics, seeing how some characters have drive-specific meters already.
I watched quite a bit of CPEX match videos, and I notice that people hardly even use Habakiri or Totsuka, which are supposed to be something like Mu's signature moves? If you compare Mu to other characters, then the first thing that makes her stand out is Steins and Stein interaction. Mu's signature feature is "supposed to be" the ability to put Steins on the field and later make use of them with interaction specials. This is what made her unique. But when you barely even see people using the character's signature move, you can tell that something is wrong.
Also, I wanted to address this bit:
On 4/7/2015 at 11:12 AM, C0R said:
->drive startup is more than understandable, otherwise she would have infinite blockstrings with stein gatlings, definitely still good
Naturally, I respect C0R's opinion as one of the best players, but with all due respect it's difficult to agree with this. The argument here is basically that adding more delay on Steins was necessary to compensate for the ability to cancel into C normals, but nobody asked for Steins to be C-cancelable to begin with. It was an uninvited change that carried a bear-handed fix to "balance" it. I was quite content with canceling Steins into Habaya/SoD/Origins as appropriate, in fact I would rather cancel into Habaya than 5C, because Habaya doesn't extend Mu's hurtbox and also has a nice bonus of destroying enemy projectiles.
I hope that Arcsys comes to their senses, and gives Mu her old tools back in the next release. Tokotachi does look great, but I also would like to see more Totsuka and more utility from Steins in neutral.
Sorry again if this topic feels dead and beaten, I just wanted to express myself. Thank you.