You're attributing a lot of stuff to me that I didn't say. I just think that adding an arcade mode is the worst way of adding single player content. I don't like the existing modes a ton either, I just think arcade mode itself is boring as hell and they need to add a real single player mode that is fun. Plenty of other games to take examples from.
What I don't like is that people act like arcade mode itself is cool... without any consideration for anything else.
The A.I in SFV is pretty Blah, and survival and normal story mode alone do everything arcade mode would, and then some. Sure the progressive ladder is nice, but is it really all that different if it doesn't have things like alternate endings, special boss creatures, or actually well made A.I. that's fun to fight against?
Killer Instinct does SP fighting game stuff right, so far. We had the basic Arcade mode in S1, with A.I obviously based around the testers and knowledge found by players. It also had Survival and an awesome Dojo mode. Then we had the smart AI made into an interactive feature with the Shadow Labs, where you could record your own Shadow to fight others in S2. As well as an expanded story mode that built off the solid foundations from S1.
Now in S3, we get the "Shadow Lords" mode, which has equips and drops, random battles to go through, loads of mutators and fancy interactions to make the mode unique, a thematic story, a shop for items, and uses the awesome AI experiences, and more. I mean, that's some REAL SP content, not just a bulletpoint to place on the back of the box.
I thin the biggest pet peeve I have with SFV's lacking content is that you earn NOTHING for playing VS mode offline. I buy fighters primarily for VS offline, and the fact I'm earning no fight money at all for it is really, really dumb. Since they walled off EVEYTHING behind it, I'd like to at least be able to say I could afford a new theme or something after playing local sets for a few hours, y'know?