You can just invite ppl to your house/gh and have them idle there to increase your spawn rate like other ppl do.
I was thinking why not make it so gralats are automatically locked from guests in player houses/gh's? Your friends could still help you farm and you could still have mazes set up. But you would not be able to donate them to other ppl thus eliminating the beggers.
Ik its nice to be able to get your friends to donate to you if your close but just short on gralats from getting an limited time item. So maybe just like you can choose to hide your gralats,and other stats they could just give you the option of turning your gralats invisible to guests so unwanted eyes cant see how much you have.