I just noticed this thread. I think that the requirement to drop a rostered player to be able to bid on a player if you have a full roster should be changed. I suggest this for two reasons:
1) It is unrealistic/not like MLB or any other real life sport to have to clear roster space prior to placing a bid. Teams make roster spots once a player signs.
2) Most fantasy leagues do not require this. I can only speak for the leagues I have been in, but I have not encountered this rule elsewhere.
Perhaps subsequent moves are not allowed because it is hard to make the owner make a subsequent move. This could be fixed by one of the two following suggestions:
1. Require subsequent move to be made within 24 hours or player reverts to previous high bidder Or
2. Require GM to post their prospective roster move that they will make to clear roster space along with the bid (i.e. 4 yrs @ $1.0 mil = $4 mil; waive Jaylin Davis if auction won)
I think this would make free agency more realistic with hopefully not more work for the commissioner team