It's because an EX move has its own advantages and disadvantages. One of the advantages that it had was that there was no pre flash animation, now that she flashes yellow its a telltale sign of her using an EX,move, which is a nerf to her.
A regular hyper you can DHC into AND out of. If I could DHC in with EX Seismo she would be a godlike support character and could be played down the order. You also can't use EX moves as part of THCs. They obviously have to be good, better than regular hypers in fact to make for these differences.
I feel like since you are putting a pre EX yellow signal you can afford to keep chainable EX moves. It would be easier to react to multi EX moves as it is.
They're always going to be better because there is no pre-flash screen. A little flash won't change that, it'll just make things a little easier to notice. List the number of hypers that are invincible, safe on block, leads to free pressure on block, AND lead to full combos. EX Seismo is the only one. The least we can do to tone down the move is not let players use it as a frame trap from other effectively invincible moves.
Chainable EX moves are nothing like DHCs. I explained why this is the case already:
1) DHCs force a character swap; chainable EX moves do not.
2) DHCs are limited by team structure; EX moves are not.
3) DHCs that are done to make a move safe do not also lead to full combos while
still being safe. You have to choose between DHCing to a safe hyper (Devil Trigger) or DHCing to a hyper that is invincible and leads to full combos, but is punishable on block (Bionic Lancer). EX cancels get both. Again, no DHC offers what an EX cancel does.
One of our goals here is to increase thoughtful play. EX cancels are not thoughtful, but proper use of EX moves are. There's no reason C. Viper should be able to do this:
1) EX Thunder Knuckle from half screen (blocked).
2) Cancel to EX Seismo (blocked).
3) Air jump cancel, call Cold Star (blocked).
4) Use Cold Star for mix-ups.
There is no team setup that provides this for two bars of meter. Plus the infinitely valuable lack of a cinematic screen. They're just too strong right now.
[QUOTE="God's Beard!";75853111]I don't get the flash anyway. Is it just cosmetic to make her more like SF4? You aren't changing the startup of her moves, which aren't terribly fast to begin with. And it'd be really annoying to stop the game like Angry Scar for a couple frames every time she did an EX move, especially since it'd fuck up jump cancels on EX Seismo.[/QUOTE]
It's a little way to help differentiate her moves from the opponent. EX Thunder Knuckle becomes more obvious at mid-screen, for example.