Level 10 has 3x soldier upgrade, you can merge it with lvl 21 reward.
→ 
It should be replaced with random gold order box that will auto redeem itself when you claim it, it could contain anything from the existing pool of gold weapons, vehicles and soldiers. It should be given at LVL 10 and also as additional unlimited reward past lvl 30 starting from lvl 35 and every 5 levels, till end of the current Season.
At level 32 and one earlier like randomized gold order we could also finally introduce vehicle camo order but make it as one time discount on any camo or if you are lazy just make it random and auto redeemable.
We all know how useless are new 15 day login rewards:
Turn three useless silver rewards into 1x random camo, 1x randomized and auto redeemable gold reward (weapon, vehicle, soldier) and 2x randomized and auto redeemable gold reward (weapon, vehicle, soldier) that way you will have some incentive to log in every day instead of just ignoring Enlisted after you are done with the Events/BP.