Allan Schumacher wrote...
No, scratch that, it'll be better if you do the sidequests, 'cause you'll have more loot and xp to help you along. 
I'd love to see games take a bit more risk on balancing this, but I'm not sure if RPG fans in general are as interested in it as I am.
Some are. In general? I don't know. At the moment, I think we've simply become accustomed to doing all sidequests and unearthing all epic treasures before advancing the main plot...because the main plot isn't going anywhere without its star character.

I am unsure how it'd be balanced, to be honest. The sop we currently have is level scaling, but that merely means characters who advance quickly (in story, not level) won't be handicapped by being weaker; it's no reward.
Perhaps if there was some sort of pay-off, but it's difficult to know what. In BG2 for instance, proceeding swiftly along the main plot means ignoring a number of quests, some of which are quite large. It's not just loot and xp you're missing out on, but quest content, extensive map locations, dialogue. You can't balance/replace all that with a shiny sword or an xp bonus.
Maybe bonus quests though? Unlocking content only if other content is sacrificed/missed?
DA2 did some weird things in forcing the PC to do a couple of quests that were not significant to their current main goal. Helping Isabela in Act 1 could have been logically ignored, and something else involving her could have been in Act II. Same with Merrill, possibly even Fenris.
Brodoteau wrote...
This is why, while I liked BG2 better, I liked the gateing that occurred in BG a lot more. In BG it was a slow discovery and the plot was unfolding as you played. There weren't all these things going at once as there was with BG2, KOTOR, DAO, ME1 and ME2 that only the player character can solve and convieniently wait for the player character.
BG1 does feel like it progresses more naturally, and at a good pace, but it had the advantage of not being based in a city. In a city you expect lots of stuff to be happening at once, which has its charm, but can suck for the purposes of pacing and urgency
unless time management/quest juggling becomes a part of the game.
Again, I don't think this is a real issue, as I am willing to go with the illusion of good timing, just like I am willing to believe that NPCs stand in the same stop all day long, making the exact same motions, waiting to talk to you so they can repeat the exact same phrase. Or in the case of DA2, the poor guy who was trapped in some Kafkaesque bureaucrat nigthmare and spent years waiting to see the Viscount (and would tell you every time you pass).
Well, I have no problem with it either, but I do wish there was some sort of pay-off for a PC who keeps her eyes on the goal and doesn't pause to strip corpses of their valuables while hot on the trail of her mother's psychotic kidnapper.

One of my favourite moments in a game is in Throne of Bhaal when you meet the group of "other adventures" who just happen to be questing in the same place as you and, well for the sake of spoilers, I'll simply put "Bondari Reloads." Simple, funny and memorable. (Which, to go off on another tangent is a great mechanic to deal with scaling issues, I like that I didn't have to go fight kobolds (which actually magically became beholders if you went to fight them) because Bondari was there and I got to "contract" out.)
Man, I should go play BG and BG2 again...
I loved that bit!