Those are solid counter points.
I guess we just have a philosophical difference.
I see restructuring and large signing bonuses as a tool to gain an advantage over teams that are too cheap to overspend. If all those bad contracts were gone and the draft picks were better, then spending 133-150% of the cap could make an already great young team even better. To me it is leaving resources on the shelf for no reason.
If the team is truly making better picks and signings then the risks with restructures should be even less. Those players will play out their full contracts unless they get injured.
But dollar-for-dollar, the team with the most cap dollars "utilized" isn't necessarily the team who spends the most money. You could spend 130% of the cap by freeing up space and adding players, but if 20% of your cap charges are in the form of prorated money from previous restructures, you're not actually shelling out 130% of the cap in cash.
Given the choice of having a $9M cap charge with $2M in previously restructured money or $9M in base salary alone, what would players prefer? Prorated money inflates cap charges without inflating dollar spent. Players want dollar spent so even if you can free up space there's no guarantee that someone else doesn't structure a contract to give out more real money than you can afford to.
As for restructuring players who can play out their contracts, there's a still a limit to which this can be done without increasing risk. Tyron is probably the most perfect example of a player who can be restructured, but even he has risk. All you have to do is draw a simple graph or two. X-axis is age. On one graph you have pay (basically cap charge) as the Y-axis, and on the other you have performance.
On the age-performance graph, what is the slope of the line that indicates a players performance with increasing age? It's negative. Players perform less well at increased age, and it's pretty much universal. At some point (30 being a commonly cited age), players decline. That's a given. On the age-pay graph, what is the slope of the line that indicates a players pay with increasing age. Assuming he's a good player, it's almost always positive. Players earn more in later years than they do in earlier years because teams know they can spend more 4 or 5 years from now than they can in the next season.
Superimpose the two graphs and the natural return on a team's cap dollar in later years of a contract is less than what they pay for in terms of performance. Was DeMarcus Ware more likely to be a stud at 26, or at 32? The answer is obvious. What restructuring does is inflate the cap charge and decrease the return on cap allocation that a player provides. In 2011, Ware had a cap charge of less than $7M (they did restructure but it could have been set from the beginning) but produced 19.5 sacks. In 2014, he would have had a cap charge of $16M but was coming off a down year and only gave the Broncos 10 sacks. There's a mismatch in both seasons. You don't expect to pay $7M for 19.5 sacks, and you don't expect to pay $16M for 10 sacks. Imagine those cap figures are flipped. Teams can structure contracts however they want so it's entirely possible that Dallas take a $16M cap hit for 19.5 sacks and a $7M cap hit for 10 sacks. Would Dallas have kept Ware last year if his cap charge was $7M? Absolutely, they took a bigger hit to cut him. Would a $16M cap hit be justified by 19.5 sacks? Absolutely. Greg Hardy could make $13M if he hits how many sacks and plays in every game? 19.5 sacks is definitely worth a $16M cap hit.
Just as a result of the age/pay/performance relationship most contracts provide lesser returns in later years. Restructuring increases the cap charge without changing the returns so you're actually losing more value on a player-by-player basis. Do you get the upfront bonus in the first couple restructuring years? Yes, but you also take the lost value on the backend. Additionally, you've reduced the amount of cap space available to fix a bad signing. You've moved an additional amount of dead money to the current year which means you either have to restructure more or settle for a less player.
As I have said, it's a short-term plan in a long-term game. You widen the difference between performance and cap charge in later years in exchange for 1 or 2 players right now. How many players are actually able to put a team over? Additionally, after the first couple of years you're no better off than anyone else. You're just accounting differently. Basically, you get 1 or 2 years to reap those rewards and then you're sitting in the same position as everyone else. The key difference being, the team who restructures a player is more likely to hold on to a bad signing for a longer period than the team who does not. If there's no benefit in cutting a guy, why would you? If it's actually harmful to cut a guy, you won't.