Frustrating isn't it ,when after helping so many on the forum, but get no response when asking for help with a personal situation?
I think the problem is two fold, this forum is, if it's actully realistic to say so,even more dead than the game, which has become more a me, me, me , money, money, money, event than it ever was, and such that, hardly anyone, no one, is going to give you a leg up.
I see no reaason that spies would not be classed as troops, but you would need an official confirmation of this , with them being so vague with their explanation texts and the fact that they change things, even though they say they don't.
True or not, I read somewhere recently,that the game had been redesigned such that it was now geared towards attack rather than defence.
Having no real experience on your question here, but just perfomed a comparison of Raine to Wendla,on assuming that they are of equal experience, I see on basic stats,apart from having no onslaught skills she is the better perfomer, but how the bonuses lower down the ladder make a difference I do not know.
The rest of the question is even more of a mystery to me.