Ok, i'll try to focus on Sandeep. I can't agree that he is 2nd in everything in Arcanists. He is certainly first in supporting his crew - Collette/Kaeris are worse than him in this matter, and Ironsides is equal or worse than him. Then, in my opinion he is currently a better summoner than Ramos. His summons can do a lot of different things, are more mobile and he can summon a hard hitter in form of Banasuva. Moreover, he doesn't need scrap markers and with Kandara, his upgrades are not limiting him. So I don't think that he is second in everything. He is first in areas mentioned by me, and good in other areas. That's too much for me, and I guess for many other people too. Nearly all of masters in Malifaux have some weaknesses, more or less obvious, Sandeep is certainly an exception to this.
The other problem is, that he will always be the most played AR master in this form beacuse of the above. If there is no scheme pool that is bad for him, then why bother with playing other masters ? And that's the issue. I think it is a lot easier to nerf one master a bit, than to buff all the others, and there is no problem with the other masters. They are mostly not bad (maybe except Mei Feng), Ironsides, Ramos, Marcus, Rasputina are all good and viable masters, but they have weaknesses, and Sandeep has none of them. I agree that he needs a reasonable nerf, but he needs a nerf nonetheless.