Red envelope may be good in china but here we do not have their kind of mentality, so or you leave the event there for one month at least or is pretty useless (almost none here feels the urge to recharge to do something for the others poor f2p, while in china this is a common thing).

P.S. i avoid recharging by default when shinobi feast is on until they bring back the sure 100 coupons gained for the first roll (swappee now with the sure 2 myoboku gifts).

About the events in general i hate the flower event for the only reason that is too bad if you do not cash. Mission general mobilization is fine but they should replace the 80 fragments in the packs with 5 fragments that drop with a 16 times higher chance), the other events are just meh.

P.S. When do you think to update the shops? When do you plan to put the event where we choose FOR FREE what sannin era ninja we want? For how long do you plan to further delay the introduction of the other useful breaktroughs (itachi, tsunade sannin war, yamato, kisame, deidara)? Where are red runes in inner gates shop? Where is kage ti? Where is east konoha shop? When will you give to jonin medal users their discounts in black market and their mysterious treasure?