User blog comment:Manapot3/Mana's VC Blog 2/@comment-2098192-20160422213902/@comment-2098192-20160423181336

RoB's max tier cards were extremely expensive, especailly because of the evo system. I never spent a dime on it becuase of that, and the botting and inflation issues that come with card trading. The market instability also made it crazy, and power creep and required EU (event units, point multipliers) made it extremely difficult to keep up unless you were carried by high spends from your bridgade. I was a few times, but that's very much luck dependant. Many of the people there were simply adept at taking advantage of the market; although I shudder to think of who was on the losing side of those transactions, because someone, somewhere, had to be (or maybe they didn't care cuz they botted their hp). I don't that that is a healthy system ultimately (and policing it must have been a nightmare for the devs).

I guess in general my problem with adding an additional 'useful dimention' is many times they have the net effect of making the game more expensive to keep up with. VC is grindy for sure, and it's progression curve is not the smoothest (which may help retain players, but doesn't necessarily convert them into paying customers) but when you say 'give a second dimention to cards so that people'll want to buy them' that to me translates: 'they should introduce more power creep into the game to encourage sales'.

Multiple dimensions also makes judging a card's power much more difficult, and thus makes judging value (and the difference in power) much harder. Perhaps this ambugity drives some people to buy, it turns me off becuase I must know what I am getting before I do it.

Mobages have proven this model works, but it discourages me at least me (and I do try to measure about how fast power creep is happening; there's even less point in spending $100 if next month that card already B tier.  If $320 lasts me a half year or more, great!). I suppose in that respect I'm in the minority.