My concerns are the existing businesses that compete against this
      not only state sales rebate blessed business but likely also
      county property tax rebated blessed business.
I am not sure what
      taxes the city will rebate but likely will.
With a rebate on the
      taxes, after they are paid first, of up to $75 Million x 2 or x 3
      IF you feel government has to help an specific industry get off
      the ground to help the economy - this proposal is better than some
      other options.
The fact that we have an existing same industry of
      multiple businesses in the target location that don't get the same
      deal it is totally unfair.
Also a lot of money. $75 Million or $150 Million or $225 Million is tax rebates. 
Against.
Update: The final bill that passed the Legislature has money set aside to minimize the damage to other private businesses.
Disclaimer: One of my past clients has property in the area. It would be a benefit to my industry and possibly my firm for a hotel with large meeting room space to be built. The reason for me opposing this plan was because of free market principles and government competing in the private sector, or  picking winners or losers and finally cost.
Can something be done? The size of the Salt Palace Convention Center is a problem, too big and too small at the same time and it has not worked as well as it could with the private sector. 
