The last 12 daily missions (3 offered, changed 1, x 3) I have had, the rewards have been everything except crystals. This, compared to getting at least 1 crystals reward every day. Not very impressed with that stat, particularly as the lag for a lot of players has gotten worse over the last few weeks.
Skate boarding can result in permanent dismemberment, decapitation or sudden and extreme blood lose. So remember to stay safe and wear your knee and elbow pads!
Timers for upgrades - unless you pay cash. Timers for energy required to play - unless you pay cash. Rare equipment that is difficult to get hold of - unless you pay cash. Endless offers for discounted bundles - all for cash. An eternity spent grinding to level - unless you pay cash.
Sadly, it's the same old turd, just with a different polish on.