That entirely depends on how many variables they want to use and how much these variables are going to affect the new setting. My suggestion was precisely to just use a few and not have a big impact.
Just reading out the variables should not be a bog deal, no matter how many there are because they are indexed within the save file. So as long as you can get that file (which as discussed may be a problem for consoles), than I really don't see a big issue there.
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I understand your point. But, take a look.
Bio employees who make a post in response to a fan "demand" or "wish for something" are, interestingly, consistent with their theme. Bio looks at a fan proposal and ask themselves these three questions.
1. How many resources will it take?
2. How much time will it take?
3. What is the value to Bioware?
Now, you may not see it as a big issue, However, their answer to your "proposal" is determined by the answers to those three questions. Assets are already approved for the game's continuing development, which ensures 100% utilization. Again, if you read some of the devs comments (twitter is a good source), these guys put in more than 40 hrs/wk and they don't get paid for it either. On reflection, one can say that the game's available assets are used over 100%.
What does it mean? Well, ME:A's development is geared toward completion by the fall holidays of 2016. To achieve this, once the architectural design is locked in, the development effort is broken down into many tasks and subtasks, each describing the asset assigned to do the job, time and resource required to complete it and so on... all purposed to meet that launch deadline.
So, the "..I don't see a big issue there." is compared to the potential negative impact on that schedule. In other words, re-assignment of an asset can have a domino effect on the overall schedule. Why? Because if a pre-requisite task is not done on time, the results can potentially idle two or more work schedules which were dependant on the "re-assigned asset" to complete it on time.
Should you wish to read up on Gantt charts and Critical Path Analysis PERT charts for Project Management here is a brief 101 article:
http://www.mindtools.com/critpath.html
All major projects use the above tools to manage and control personnel time and resources. Plus Upper Management are kept informed on the project's progress vs the origial approved deadline and can thus approve or deny any change that impacts the schedule.
Having said this, Bio will always looks at ideas to improve their games. After, all, it is normal practice to "pad" the schedule to handle "unusual circumstances"..... but not by much.