I'm sure by now everyone has realized that every champion has a Teleport home skill. It's got (i believe) an 8 second casting time, which is stopped on attack. Essentially this gives each champion a quick and easy way to retreat back to base to heal and/or shop without taking too much time out of their schedule.
In my personal opinion, I think this feature should be taken out.
"Why?" You say? Let me explain. With this teleport home skill (henceforth known as the bluepill) it's very easy to sit by your tower and chill for 8 seconds, with the reward being a safe and quick travel back to base to heal and shop. However, I think this takes away from a very important aspect to the game, ganking.
(Once again I'm going to compare LoL to DotA. Again, I know this isn't DotA, but LoL's roots come from DotA's major success, so I think it's necessary to have some of the same elements)
Just earlier I made a post about how the LoL game duration is significantly lower than the average DotA game duration. The bluepill is a heavy contributer to that fact. Instead of taking up an inventory slot (not to mention a tad bit of gold as well) to have the safe and secure passage to the shop, LoL gives every player a bluepill (which takes no mana, it's free of charge, and to my knowledge has no cooldown as well).
Yes... longer game durations would encourage more farming instead of pushing (a lot of frustration comes out when the winning team chooses to farm continuously instead of just ending the game), which can be an issue, but also that gives time for the losing team to possibly make a comback.
IMO, the current bluepill needs to be changed somehow. whether it's a long cooldown placed on it, one time usage per life (cools down after revival) or something.