Its extremely annoying and upsetting when you have to take a break from lioden (bored, busy, etc), only to come back and find that any special or good lions you forgot to reclaim before leaving have all vanished.
I have two solutions to solving this.
1). Make reclaiming lions based on RO. Instead of every 7 real life days, make it so that players have a chance to reclaim the lions for 7 ROs.
2). Extend the time limit to a month. I think both this solution and the one above could be used with the last suggestion to
3.) Add markers at the top of the screen (Like the starving lions alert) for how many lions someome has to reclaim. This will remind players of lions they have missing AND potentially could tell them how many days can they wait before reclaiming them

I know that I personally have had many a good lion be lost forever because of the short time limit that’s really easy to forget about.