1) very unrealistic, chances are there are less than 20 people who Q for masuri per minute, having someone within 1k power during that duration is very unlikely, which will just result in the 1 min default which defeats the purpose. Expanding the matching time to 5 minutes and range to 5k is probably a reasonable amount that will get proper matches(within 5k) for most players.
2) It's true that currently the matching range overshadows whatever winning/losing adjustment, but this should no longer be a case if the default range is reduced to 5k.
3) This I would have agreed with, except there is the case when a single person is left in the Q for literally hours while everyone else gets matched within 1(or 5) min. I think it might be better to make this more dynamic, instead of saying match with "anyone" after going over a set time, instead every 1(or 5) minutes in Q, your matching range increases by a fixed amount, eventually reaching "match anyone" but more likely to snag up the closest match possible earlier than that.
4) revive cost should be reduced, personally I only get about 100 pot/week, for 2 masuri. I don't see the need for increasing number of revives, however, the event is not meant to be a free gimme. remember, every loss anyone suffer means a win for someone, and given that you can put up 4 losses, that means the average win is over 3, close to 4 (because 5 winners does not generate 4 losses, so it's bit lower). This is entirely acceptable average.