KarinsDad said:
Actually, we play DND with "coins"...In our case, just like in the case of adventurers actually lugging around chests full of gold, it makes more sense for the economic scale to be something reasonable to use with the rest of the game system. Even without using coins at a table, it's excessive bookkeeping to keep track of money in 3 different scales (GP, PP, and AD) up to 4 or more digits each (let alone keeping track of gems of many various denominations). 4E is supposed to get rid of bookkeeping, not add more.
Adventurers become greengrocers and merchants, and are more incentivized in 4E to become economic tradesman instead of adventurers when the curve is so steep. Unless a PC is motivated to save the world, why endanger himself when in a few weeks, he can save up enough to buy himself a town and live in luxury?
I'm seeing two issues here:
1. Suitability to physical props
2. PC motivation
As to the first, while I think it would be fun to use chips to represent plyaer cash, the system has obvious problems when players have billions of gp in wealth. The only solutions I see are either house ruling it to reduce the number of chips you need, or stop using chips.
For GMs who don't use physical props, like myself, I don't anticipate the problem of "excessive book keeping" you predict. While I'd describe a dragon's hoard at 25th level as including a mountain of copper, silver, gold and platinum pieces all mixed together, I'd handwave the book-keeping down to a single value.
"After spending a week counting and sorting the coins, the dragon's hoard is worth a total of X-thousand PP. BTW, where are you going to keep a mountain of coins? Basement of your extraplanar mansion? Great!"
And IME, PC/player motivation isn't a problem. I'm not running a game where players spend game time exploiting the DnD economy by buying individual sheep then labelling them "flocks of sheep" and selling them for a few gp more.
I won't do this for flocks of Astral Sheep and Astral Diamonds either. YMMV, but that just isn't my bag. If a player wants to be in a game like that, more power to her, but I'm just not the right DM.
As for PC-motivation, I think it perfectly natural that a PC might want to retire, enjoy her hard-earned wealth and stop risking her neck. If that's the case, the player would just need to bring in a new PC.
Problem solved.
Generally though, I've found the player wants their PC to keep adventuring so the *player* gets the thrill of discovering a Holy Avenger, and more cash than the pope.