I'm a commissioner too of a Private Yahoo Roto League and I don't like vetoing trades either but I'll give you my opinion on the two trades you've posted.
Hank Blalock, Torii Hunter, Juff Suppan for Randy Johnson, Eric Chavez, Carlos Lee
Personally I'd love to be the team getting Johnson, Chavez and Lee, and I'm assuming this deal was proposed because Johnson is on the DL. But he's coming back in June, and should be back to full strength. So to compare the players, I'd say Randy is better than Suppan, who pitches for the Pirates, Chavez is better than Blalock since Blalock doesn't hit left handers, and Carlos Lee is even with Hunter since Hunter isn't stealing bases.
Veto the trade.
Erubiel Durazo, Shawn Chacon, Joe Nathan for Albert Pujols, Jose Jimenez, Billy Koch
Simply put, Pujols is worlds better than Durazo AND has 3 position eligibility. Chacon is riding high right now, but history says he'll come back down to earth soon, and I'd rather have Koch than Joe Nathan. What good is a middle reliever in a head to head league?
I have no problem the 1st trade, eveything looks good there. Why anybody would give up Johnson is beyond me unless he stays hurt all year.
The 2nd trade I agree with chennemann. It is not a good trade.
I mean Pujols and Koch for Chacon a so-so starter, Durazo who is inconsistent and Nathan, a player who isn't even in the majors yet. Although Nathan has been impressive in the minors so far this young season.
I say, yes to the first trade because Chavez is superstar and so is Johnson.
#2 just isn't a fair deal to me. I would email the owners and ask them and see what they think. Vetos of trades can cause owners to quit and then you have a dead team to deal with.
If the other owners in your league are okay with it than let it go, otherwise I wouldn't let it go.
Do NOT veto unless you suspect collusion or the trade is so rediculous that it effects the integrity of the league. Neither of these trades applies. Let them pass. What if RJ never fully recovers from his injury? Perhaps Pujols' injury hurts his production. I don't think these trades are lopsided enough to veto.
Both of them are extremely lopsided. I hate vetoes, but these are pretty obvious.
Yes doctor, I am sick. Sick of those who are spineless. Sick of those who feel self-entitled. Sick of those who are hypocrites. Yes doctor, an army is forming. Yes doctor, there will be a war. Yes doctor, there will be blood.....
Leave the trades alone. What if the guy doesn't want the risk that RJ could have this problem go on all year and just wants to move him now? He's entitlted to make that bet. You'll be the bonehead if you don't let him make this move, and then RJ's injury makes him ineffective all year. It's not your place to substitute your foresight for that of another owner.