Reading the title I thought this would be about a guy sitting on 99 RBIs, last day of season, team has already clinched a playoff spot, but you let him play chasing the 100 RBIs. Same for a P chasing an equally unimportant 20th win while risking injury. This I have done at times even though I know it is a bit foolish.
What you are describing? No.
Of course everyone is free to play the game as they see fit (especially a solo league) but this sounds like a big bag of "game the system" to me. I can't even begin to see the fun in it, but that's just me and we can disagree
The whole post is a great description of why I have never wanted to play in an online multiplayer league. I want to play a simulation of baseball and not "work the numbers" of a computer game to get an advantage in a game that is trying to simulate real life baseball. Yes, this would be real baseball as I see it and being a solo league it is only my judgement that matters