When using goblin sharpshooter on a stack of 1/1 should be able to select the whole stack at once.

Was playing a game where I had sharpshooter and meathook massacre on the field, and my opponent had unbeatable squirrel girl. Kept having to kill off 250 squirrel tokens 1 at a time. But whenever they generated squirrels they gave me an advantage as I could kill off all those squirrels and get 250 life. I was in a favourable winning position except due to the way timeouts work in the game, and having to select a single squirrel at a time I ended up losing having to forfeit. I don't think this is in the nature of the game to have people lose due to timeout rather than the quality of their deck, and play. A way to trigger on an if possible condition would be useful to prevent this going forward.