This seems like double work for a start. This is where the current DAO voting system lacks. There's a few things that could be up for debate.

Have the full plan ready and put it up for a vote and save time on implementation.
Present the full cost to unbind the card. Not just the cost to unbind for land then find out the extra cost to unbind for sale/transfer later. Phase the rollout if needed but get all the fundamentals completed first.

Gladiator cards too?, brawlers must cringe just at the thought. Adding merits to rewards coming back to haunt us. At the proposed dec/dec-b price for both rewards, rewards seem to get nerfed after the fact too now, that's my take on it but not everyone will agree. Price just seems double the amount anticipated.

Gladiator cards already have burn value, will the soulbound reward cards get this too? Either for land or full unlock?

Vouchers not used at all but @yabapmatt.sps did mention in Mav chat earlier that the proposal might be edited to include them.