3) Coherent incremental rewards system (for arena and tournaments)
The present rewards system, is kind of strange. Although the 3-stars are where they should be at the top (although arguable unattainable - 3000 pts in the arena??! Ya right ), the overall progression could be much more coherent. I'd suggest incremental ISO rewards, and covers/HP at the milestones.
25pts-20Iso, 50pts-30iso, 75pts-40iso,100pts-1*token/cover,
125pts-50iso, 150pts-60iso, 175pts-70iso, 200pts-50HP
225pts-80iso, 250pts-90iso, 275pts-100iso, 300pts-2*token/cover
With a system like ths, it'd be incentive to always keep pushing on, because the rewards will always be guaranteed to be getting better. By the time you're past the 1000+ pts mark, you're making decent iso with each progression and not getting insulted with pittance rewards (Hawkeye 1* at 1400pts?? Seriously?? )