a)Â i. On the contrary, I don't see Acekard making this cart much more expensive. The Acekard+ was very reasonably priced at the time (50 AUD), and 8Gb NAND flash carts are quite low in price (8Gb MK5: 45 AUD ex shipping). Flash carts are very well priced these days. Think about it, how much does a real game cost, 60 AUD? Are you saying most people can't afford to buy 2 DS games? Come on.. get real! Given this took 10 months to manufacture, and that it's being manufactured by an asian company, I reckon it'll be priced around 100 AUD. I remember when the groundbreaking slot-2 lite solutions came out, they were around that price.
  ii. You obviously haven't played many games on a flashcart. All slot-1 microSD solutions are hampered by the latency of the reader/microSD card, which cause some (popular!) games to freeze. Most NAND-flash ram based carts to date are plagued by slow write speeds, and all are hampered by unexpandable memory. This appears to be a best-of-both-worlds solution!
b) So, what excites you then? As far as most of the GBAtemp community are concerned, this is the cart they've been waiting for - for a long, long time! Human beings are naturally creative, this will allow them to be. Why do people spend so much time making custom firmware for all sorts of devices? Because the device didn't support a feature which they wanted, or they just wanted to get it to do some funky things that weren't intended originally!
Anyways.. happy moaning to youÂ
EDIT: cleanupÂ