Downloading is all well and good but I'd like for the DEFAULT option for items to be 'claimable' to the itch.io account so that we can play (and replay) at our leisure (like how Steam and GoG work). I'm aware of the itch.io application and that would be even more useful with a 'default on' claiming system.
Then if something isn't claimable it is because a developer explicitly disabled it (which is their option to do so).
Time is precious and sometimes people might just ignore a game instead of clicking 'download now' (for example if they're browsing the site on their lunch break at work). Sometimes easier to just claim and have it there waiting for ya when a chance comes to find something new to play. :)