This limit of 25 has been annoying me for a long time, but now you've added more dailies and weeklies with additional FPs/Operations, as well as quests for speeders, which will take a while to complete. Maybe having too many quests could be confusing to new lower-level players, but at 50 you have a ton of quests that can take multiple days to complete, which compete for space with companion missions, daily commendations quests (now with the addition or Corelia), PvP, and FP dalies.
Yes, I can drop existing ones to add more, but I do dalies, while PvPing and waiting for guildmates to come online for FPs/Ops, and there's no real need to have to manage these when the limit could just be raised for everyone/when you hit 50.