Main issue with Cazorla, I think, is his stamina if you play him in midfield. I've heard people play him as a striker, which seems like it might work, but you don't want him doing too much running.
The trouble with doing rivals for rewards is that the rewards are a bit rubbish compare to WL and even Squad Battles. Packs or coins? Can't they give us both? And Rank 1 in Div 1 is what, 80k coins?
If they wanted people to play it seriously for rewards they need to make the rewards better. Otherwise people will just use it to mess about in and you still won't get proper games.
The trouble with having a mode just for objectives is you could still get people that play it with no intention of doing an objective, just to ruin other people's fun. Unless you think the Fifa community isn't that toxic? How do you enforce people are doing an objective to take part and what if the objective they're doing is score a finesse shot in 6 separate games?
On a side note I got my first person asking me to let them win so they could do an IconSwap objective. I didn't see the message until after the game (which he rage quit) so I apologised (I wasn't going to let him win anyway). Then he started having a go at me.
Apparently using a normal team in rivals when people are trying to do objectives is everything wrong with rivals. So I'm the bad guy and apparently it's perfectly fine to go around asking for wins.