If you really don't like the idea, then fair enough -- although I would recommend actually experiencing it in the game before you make claims about how jarring you'll find it.

Beyond that, if you really don't like the idea then by all means don't purchase the DLC. There is a whole giant game still to play which doesn't require any additional purchase, after all, and the number of these things you'll encounter overall is pretty small. If you're worried about the "slippery slope", as it were, by all means register your disapproval. There's a DLC team headed by Fernando Melo which will no doubt be looking for feedback, and I doubt they're above adjusting the approach if they feel it's called for. I also doubt they'd simply remove it outright just because some people don't like it (especially prior to anyone actually trying it), but if concerns are communicated intelligently and politely it's possible that at least some of them could be addressed.

If you haven't noticed, I'm not really the person to talk about this stuff. It's pretty far removed from my bailiwick, after all. But reasoned discussion, even when it's something you don't like, never goes amiss. So I'll leave you to it.