Like I stated many times...
1)
FLUFF: Get the idea of what is the Squad, and what is their purpose. In your case, it is not hard at all. If your Experimental Squad could be substituted by another one (like the original Rogue Trader could had been an Imperial Renegade Squad without mutants), then thre is no point on the Squad.

2) Concept Before Form: Go broke with the why's and where's and when's. No need to concern yourself with 'rules'. Your mind is your limit. You want an Emperor Titan? Have it. Hell, put a Warhound Titan as his pet.

3) Form Before Function: Once you get your concept rights, the forms (Squad shape and units) will start forming almost by magic. This is not Mordheim or Necromunda... if you design (like you are doing) like that, you end up with the 'wrong' product. Focus like a laser-beam!
4) Function Will Come: Stats will come by themselves, once you know WHAT you want. For example, you want a 'disposable' unit like the IR Worker, if you start from stats (like you would do in Mordheim) it will take you MONTHS (and I'm not joking, for once) to balance them, because you have to cross reference against EVERYTHING. If you let things fall into place, you may have some stats that the Unit Cost Calculator will tell you if the stats are too much. Don't worry... by that stage, we will be able to help.
ABOVE ALL... if you want to start designing Squads for yourself... cool! Nobody is stopping you. If you want to design new Squads for Death Squads, you need to become a
Contributor. That means, learn the game, post questions and battle reports. You MUST understand the game design mechanics first. Once you become a
Contributor, you will have access to other discussions and resources.

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. The Mordheimer - Death Squads' Chief Editor & Ninja Designer.
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