I'd like to know how long your inks are guaranteed to last outdoors at original setting/profiles ??
If you go tampering with the amounts of ink going down, don't you think for a split second, they'll last an even shorter amount of time ??
We get three to five years without screwing around with profiles. With laminate, another 18 months or so. In your case, you might get 1 to 2 years and I doubt the laminate will help much at that point. How cheap can you go for your customers before it starts to have a repercussion of hurting your business ?? Besides, how can you say you are selling the same product as the guy down the street if you're watering down your inks ??