Merge Academy Useless Item Overload

Merge Academy progresses by offering new ways to generate items. Cauldron, Looms/Sewing Machine, Book Generator, Mushroom, Terrarium, etc. Rather than provide the new option, the game tends to offer pieces of the new item-generators to merge. Those items cannot be removed. Most likely to ensure players don't get rid of things they need later. 

However, over time those pieces accumulate. Sometimes extra generators accumulate. It's no longer tactical when storage and sections of the board are taken over by useless items that can't be deleted. 

Please give players a free option to remove the accumulation of worthless items and extra generators. Once I have a maxed cauldron or sewing machine, I don't need pieces that will never be enough to make another one. It should include a warning, especially for new players, that the items might be needed and to ensure they do not in fact want it. (To avoid problems, if it's feasible, make it so the upgrade items can't be deleted until there is one maxed generator.)

Additional, freebie items need to be reviewed to determine if they're beneficial. Accepting, placing and deleting useless items (when they can be deleted) is annoying.