That JVR trade is terrible. It would be better to keep him then trade him for some D prospect that may never see the nhl.

Why there are so many posts that the Leafs trading for prospects with some of their top prospects seems counterproductive. Aren't the Leafs in position to try to make a deep playoff run?
Even the Marchenko trade. The Leafs might need him this seasons. Leafs have cap room. Why give him away?

Totally agree with you, IMO Leafs will keep them all of pending UFA JVR/Bozak/Komarov unless someone comes with an offer you can't turn down, and JVR/Bozak have NTC that makes trades more difficult. Unless at deadline there is no chance to get to playoffs (hopefully is not the case) should keep them all and let them walk away thank you for your services in the summer. There are prospects to replace and in case of need look for short term veteran help.
JVR spot I think Leivo will be given chance to fill in, other options are A.Johnsson/Kapanen
Komarov can be replaced by Hyman on third line, giving space for Shoshnikov for example on 4th line
Bozak is the most difficult to replace as we are thin at C, maybe Nylander is moved to C or a veteran (Thorton if still can skate for 1yr to play with pal Marleau?) short term until Brooks can come up
4th line C if Moore does walk away can be replaced by Gauthier if he recovers well or maybe Aaltonen...there would be options in FA if needed for short term

Regarding Marchenko if he doesn't have good camp I think Leafs will try to trade him to bring back Polak for 1yr depth