The reason it might be important for balance reasons is to improve late-game conquest, as civ's capable of progressing into the late modern era will field large armies of tanks and what have you, conquest at this point might be a little hard, take late modern combat in Civ4 for example, I never liked it because I found it hard to win against opponents the same size as me destroying my stacks before they could do the job. If however I can tech again to get a further advantage over them this makes late-game conquest and thus victory a little easier, also Uranium while already strategically important because of Nukes, if the GDR is something that will clinch the victory for you over a modern enemy, (as apposed to nuking them off the map and have everyone not like you as much) then this makes the Uranium even more important so if thiers a source of an enemies border (like an iron source in the early-game) you may consider stealing it off them so they can't build GDR's.
To me all this added depth on the late-game stage wouldn't be possible without the battle clincher that is the GDR. Which is a reason why to have it in the game, to balance Conquest with other possibly easier forms of victory that involve turtling up and working on culture/science/relationships.
Their are also plenty of other valid reasons brought up Aza and co to not allow the disabling of the GDR with a button.
- Developer time is better spent elsewhere
- Why should you few people get your "disable GDR" button when the 10's of thousands of potential Archer and ranged combat haters don't get thier disable ranged button.
- In the case of fairness, a giant list of options could be brought up, lets call it the "nit-pick" button, to disable/allow every single thing in the game, similar if you will to the "Worms" option page, which listed every single weapon, and you could pick and choose what to have in the game.
However this again IS A MASSIVE waste of developer time that could be spent on better things.
- Why ask developers to make the button, you can mod it in yourself, from the get go, the theme has been to make Civ5 extreemely easy to mod and very modable, this allows
you to choose what
you want by doing it all yourself. Much better than the developers personally catering for every whim.
I'm sure their are more reasons not to include the button, one of them being,
- the GDR is super awesome,
- the GDR is an unstoppable killing machine and you really want to make him angry by installing a disable the GDR button, good luck with that you suicidal maniac!
But those wouldn't have much sway I wouldn't think
