They do have multiple ways of completion. Yoshida mentioned this in a post last month.
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Why, in a nutshell:
Instances take up server resources. The game can only offer so many instances of any given area at a time.
Remember the BCNMs for the companion quests in FFXI? Or when people realized Splitting Heirs was profitable? Or primetime Nyzul and Salvage? Or anytime Limbus and Dynamis? If you did any of those, you probably spent some time waiting for the people inside to finish. Maybe you even lined up for it.
Now imagine if those instances had no time limit. Want to do that BCNM? Got your people together for a KS99? Tough shit, somebody decided to have a picnic in there. Maybe come back tomorrow, they might be done.
Time limits are necessary for instances. Otherwise you'd have idiots and trolls wasting everyone else's time by locking the instance.
Kinda makes you wonder about the motivations of the people complaining about time limits.
Time limits are not bad. If you played FFXI and remember salvage, it was a 100min limit with tons of stuff to do. There were multiple paths you could take, multiple NMs per floor to kill, and ramparts to farm.
These dungeons may not be as Robust since they have had other priorities, but don't be so quick to write this off. A time limit creates a sense of urgency and further enforces formulation of strategies to make the best of your time. If you could enter a dungeon and know you have all the time in the world, it's not as fun, IMO.
I'm lookin forward to it. Hopefully things are challenging this time around and that'll make it all the better.
well i would consider 30 nm's a pretty big add and quite easy. nerfing the already easy nm's that were already easy and made them laughably easy. those absolutely horrible side quests that were added. these are things that have been added under yoshi. none of it has any challenge to it at all.
they want the game to be more casual, i enjoyed dynamis overall, but after awhile, you hated time extensions, because it was like damn, we gonna be here an extra hour.
Its possible the time limit is a challenge factor,
Or its possible the dungeon is really large/variable and the hour time limit gives you reasons to come back to do different parts.
Time limits are usually a pretty good challenge, mechanic, forcing people to play well, and maximize effeciency. Many people never learned how to play PSO till they added cmode, which had rewards for completing things as fast and as effeciently as possible.
The key here is how replayable these dungeons will be.
Well i can list one event that was timed in WOW, Amani bear runs. One of the more challenging( at least till we over geared the heck out of it, and had the strats down pat) and fun runs in Burning Crusade. Bear runs were way more fun then most of the other raids at that time period, because people had to be on their toes and everyone had to give 110%.
Judging content before its released or done is a little crazy imo.
besides no time limit just means hiding place for all you botters and rmt lol.