This is the easiest question I've ever been asked here.
The answer is yes. It would be -just as it always was- better without DLC.
Any advantages to DLC (that being more content) used to be covered by expansion packs. They weren't any small episodic additions either. In the 90s and early 00s expansion packs really had a lot of content packed into them. It wasn't as much as the full games they ran through, but it was well worth the price they came for. DLC prices vary wildly, but the content they have is invariably stuff they could have just tucked into the main game, but chose not to. More often than not it's just a few skins. An extra weapon. Some stupid carrot to dangle in front of those stupid enough to pre-order.
My main gripe with DLC though, is something entirely different. Before there was DLC, especially on consoles there was real weight to the idea of a game 'going gold'. Once it shipped and was released that was it. The team making the game knew perfectly well that if they wanted their game to sell, it would have to be solely on the merits of what the game had to offer when it first arrived.
What did that mean? They busted their arses making their games as good as they possibly could before release. I understand that if a game was broken it would stay broken forever, but you can't polish a turd- if a game goes all the way to release and still sucks, there usually isn't much DLC can do to fix it, and considering how lazy DLC is, it's hardly suprising. Just look at today's environment where devs have an overwhelmingly cavalier attitude to releasing finished games. "Oh we'll fix it post release." "Oh just finish that car later and we'll ship it as DLC" "hey, we could charge extra for that""What a great idea!" It makes me sick to see such blatant profit over quality business strategies everywhere, and what's worse is the consumers just eat it up like a flock of mindless sheep.
On PC it's not so different. We always had patches, and still do. They bear the brunt of the important stuff- bux fixes, tweaks and balancing issues, removing exploits etc. A while ago they even used to include free maps. Free maps! These days they'll whack a pitiful group of 4 maps together and release that as if it was some brilliant DLC deal.
If I had the ability, I would tear away the gaming industry's ability to release any kind of post-release content save for patches and full blown expansion packs. Those developers can crack whips over themselves all they want as far as I'm concerned until they start releasing finished games once more.