One Wheel
Legend
Yes, they sound like a great idea. But it costs money.
A bit of a problem: National Records, WR or subs etc can happen at any time or any moment during the competition. So the claim/making of the coins might need a solution for this.
WCA delegates/committees might have to bring all 'type' of coins sufficient to the competitors if they want to give it to the competitors during the competition. So we need a solution for this.
It would all depend on what achievements were awarded what coins. Here's one possible idea:
For each event
WR Single (18)
WR Average (15)
CR Single (18)
CR Average (15)
NR Single (18)
NR Average (15)
Sub-x Single (54)
Sub-x Average (45)
No more than one person per competition would get any of the NR/CR/WR coins, so delegates would only need one for each possible record. MBLD and Big Blind don't track averages, so that's the difference there. I'm assuming 3 people could get sub-x coins at a competition. Of course more could, but it wouldn't be a big deal to occasionally have to send them to people after the fact. This would be a total of 198 coins, and there are by my count 203 WCA delegates. If the WR/CR/NR coins were from the last link @Dom posted, 1.5" coins with color on one side, purchased 500 at a time, and the sub-x coins were the wooden ones, purchased 5,000 at a time, that's $146,520, or $721.77 per delegate. That does add up fast. The wooden ones really are cheap, maybe it would be better to get a few of the nice ones and send those out, but have delegates carry the wooden ones.