A strange concept, tbh...since there are no real repercussions to failing to water plants this time around. It seems like your flowers never actually die...they just won't produce hybrids if you fail to water them. Worst case scenario, you forget to water them and have to wait another day for a chance at hybrids. I wouldn't see that as something worth paying for, though. Now...maybe if they collect your spawning fossils/fruit and store them somewhere for you to collect when you return. That is really the only thing I'd see being useful.