1: holds in stun won't turn people of he game just on principle if the game is balanced in terms of risk/reward/punishment. You'd have to be quite ignorant to hold it against the game rather than LEARN the game and how to work with its systems.
It doesn't have to work like other games - again assuming its balanced under its own rules/logic. Its been quite clear how things have changed around the hold and that it is a much stronger system with good competitive options.
It's now up to tournament play and feedback to see how well it bears out.
But it's not a wrong thing on principle.
Edit: in fact, it's a misleading to say it has holds in stun because that's no longer universally the case. Now that you can't hold in sit down, wall lift, limbo, cb stun etc, it's more true to say it has the ability to counter out of some stuns, so your goal is to put them in the right stun and exploit it. You can see right there how the game has changed, before talking about the mindgame of punishing holds
2: tournament viability is not about the above, it's about the community. Yes, the community has to be happy with a game for a game to reach its potential but don't tell me every sf fan loves every aspect of sf4.
3: don't ignore the fact, when looking back at history of Doa tournaments that Doa has never been around in a post sf4 world. Mk9 as a comparison, the BIGGEST factor after it being considered a good game by fans and casuals (with no presumptions on tournament viability over just being a fun game) - is the fact that it came back with a bigger, more interested fighting game audience. Couple that with the advent of YouTube and streaming which weren't a real factor before sf4 and you have a totally new environment Doa5 is coming into.
Besides all that, the game looks really good and it's illogical to think the very positive progression to he e3 build will suddenly reverse. DrDogg said there is no evidence in the videos here to think they've fixed or not fixed a number of things - nor is there evidence they have gone back on the positive changes to the game.