the $.10 and $.20 for tri and pick 3 and pick 4 ruin the payouts
as for show wagering i would keep it although cant remember the last time i made a show bet, but i would keep just for the odd time the bridge jumpers get hit , thats kind of funny
free of charge i am going to give tracks what denomination they should be using on bets
wps, minimum bet $5
exacta is $2
trifecta is $1
pick 3 is $1
pick 4 is $.50
superfecta is $.50
pick 5 /6 is $.20
high 5 is $.20
now you will start to see some decent payoffs with fewer people hitting them
also in 40 years we have actually reduced the minimum wagers or kept them the same, any other industry done that and not reflected inflation etc over the last 40 years