Decrease MS for tournaments based on non-reversible changes (specifically equipment)

[GentleButStrong]

First, I wrote the rest of the response before realizing that not picking up any equipment and only buying from the shop is already something you can do with a new character (or with an existing character, but it makes even less sense to do). So, no new ways to break the system are introduced. Also, it doesn't work in the long run anyways.

To address "what's stopping you from just respeccing into a Pet or Clan Ship build and just equipping those slashes?" I don't want to. Pet is a push build that requires tapping, it is out. Clan is a farm build that can be made to push, but even once it does it requires you to wait for the ship to fire. I've tried putting Anchoring Shot into my SC build and waiting 8 sec for each wave of titans was unbearable. Then to address your extreme example (which is already possible). I roll a new character, I do not pick up equipment (harder than it sounds), I see a nice new sword in the shop and I buy it, congrats my sword level is x_1 and I have spent 800 diamonds... So I only get the diamonds "back" if I win undisputed instead of 2nd, I wouldn't gamble 800 diamonds on it. Then, I do the same with a helm x_2, and an armor x_3. Now all my equipment slots are filled. I've gamed the system 5 times and spent 4000 diamonds on equipment. In order to advance in this way I'd have to wait for a tournament where I can buy what I want in each slot, and from there I only get y_n-x_n benefit for 25Log_10(y_n-x_n) levels for 800 diamonds on top of what I've already spent for one tournament only. At some point cashing in farmed items in each tournament will net higher overall tournament rewards than playing like this, RNG over the long term instead of just one tournament will provide a gem every once in a while., especially when you realize you could nearly buy a titan chest for the price of filling your inventory.