http://goo.gl/xkZiC　- This thread is talking about what's going to happen with the dated gears and Triairy just commenting wrote YoshiP is currently carefully discussing regarding this matter to make sure it's easier for the new players and once they have details they will let us know. As for the +2 and +3 will be changed to +1's just like the stat changes they made in 1.20 for +2 and +3 gear all being same as +1 gear.

http://goo.gl/odQfD - Thread is titled "Give me the swimwear!" (in a more harsh way) and this one Triairy just saying what was mentioned already before that seasonal events are items to show that you participated in those events when it actually happened so it's not something they can just give out easily. Of course your voices has been heard by the devs and they will add different gears designs and within that they are also looking into swimsuit with new design. Please look forward to it.