Ok, let me dispute you point by point.
"1. Cost - Y'know how everyone complains about the cost of creating a powerful T1 deck? Well, imagine building a 250-card T1 deck and playing without sleeves, for ante!"
It's *like* Type I, yes. But if you think that in order to have a successful five that you need P9 and 40 duals, you are dead wrong. You can build fives, that beat those decks, out of just commons. Part of having 250 cards to work with is the total randomess of pulling your power cards. So if you spread mid-range cards througout the deck (like Rancor, Negator, River Boa, etc), you can kick the crap out of a $3000 deck.
"2. Brokenness - This format is so broken it's sickening. The SAME power cards are in EVERY deck. If you can't afford 'em, prepare to lose lots of cards. If you happen to be lucky enough to FINALLY beat a $3000+ deck with your bargain deck, and your opponent anted a good card, it quickly gets switched and you're stuck with a stupid Jeweled Bird. I see this happen so many times it's not even funny."
They need to get rid of Mind Over Matter, that is for sure. However, I have seen literally dozens of different styles of five decks. Now while most of them contain 4 Contract from Below and Jewled Bird, the rest of the deck varies wildly. I have one five that uses all basic lands, and features bad cards like Cloudskate and such. And I don't lose very many cards from it.
Have you seen the Type I on a budget articles? They provide a good resource for ideas that you can incorporate into a 5 deck.
"There are other reasons I don't like this format, but these are the main two. Personally, I don't find spending/losing a fortune in cards to play against the same cards every game enjoyable. With Zuran Orb (which is not even RESTRICTED in this format!), games can last hours and hours. The problem with that is, you've already been beaten, and your opponent has better nothing to do than prolong your agony for a couple extra hours. IMO, this is the WORST format in Magic. I have more fun playing against an endless line of netdecks in T2"
I must play in a totally different environment than you do, because I never experience the problem of long games.
And I guess the problem with ante is that people who view Magic as an investment get kind of worried. Personally, I just view the cards as pieces of cardboard, so I have no problem playing for ante. Of course, my fives consist totally of card I would never use anyway, so I guess that's why I don't care about losing a card here or there.