Somethings you might add:
[1]. Fast Forward Button. (Duh)
[2]. Seconds counter, so the highscore is not about the money but the seconds too complete the cargo too. :)
[3]. Every man/lifter (i dont know what they are called) of the cargo have power level/bar so they have the power cap (tired) when moving things, depends on the Angle of the walk bridge, and the weight of the cargo.
I'm not entirely convinced that this game requires upgrades. I was rather thinking of object to find to help you and certainly more levels. I'll make a Spy 2 in order to add all this stuff :)
anyone has different taste, and freedom to speech. thats why they called opinions, if u dont like it i assume you dont really understand what "different taste" is. but other case if it contain harsh language and verbal abuse its good to downvote em.
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Sponsor like GameArk pay us to develop games that you all play. so its not our choice what intro they will have