The thing I don't like about the re buy tournament is that it has a little too much of the " Do Over" logic built into it. Someone beats me, Do Over, beats me again, Do over, I beat them, Gotcha! I shouldn't have been there to get um in the first place. I prefer lose/out. It adds an element of suspense to the tournament structure. Which is one of tha main reasons I like Tournaments.
As for the bigger pot, that's what attracted me to rebuy's in the first place, and actually in direct conflict to what I just stated above so did the "Do Over" element of it. However as I matured as a player I found that, at least for me, the rebuy rarely ever led to better play on my part and usually added to the "tilt factor". Again I'm speaking stictly for myself.
I do the same in a cash game. I have a preset amount that I'll play and that's it. I don't mind rebuy's at all in that arena because each player has the option to leave at any time giving back the freedom removed in a tournament.
Also as to the bigger pot, at a $30 to $40 buy in with 10 people, Your talking usually more than double payback for finishing in 3rd. Not a bad night if you ask me. Any time you can double your roll and walk away is a good night in my book. Sure I'd like to walk away with 4 to 5 times more than that but I'm just not ready to risk that kind of $$. I fully understand the logic about big bet = big win but I'm not comfortable with the big risk associated with it.