Cactus Game Design Message Boards

I have a logistical question about "change hand size" abilities. I am working on some new card ideas relating to this set of abilities and I noticed that it has this default condition:

• A change hand size ability lasts until the end of the current phase.

My question is: why does it have this default? Since change hand size abilities target the end-of-turn maximum for a player, how are they even supposed to function properly if they only last until the end of the phase and, as such, wouldn't actually accomplish anything unless the ability is activated in the turn player's discard phase? It basically requires that any change hand size abilities have "while in play" or "for X turns" or similar to even function at all, and that seems counter-productive and counter-intuitive.

Was there reasoning for this default? Is it possible to reconsider/change that default so as to be able to save space in card abilities?

That's pretty much what I figured, which is why my follow up question was whether it could be removed. I don't think changing hand sizes (to a certain extent, obviously setting it really low or really high would require a cost/duration) are powerful enough to warrant always limiting them by having to add a duration, and it would save card space to not have to specify a duration.