I play a lot with Ramos, and before i added Kaeris, my win/lose ratio was nearly 5:1 (1 because of luck ). So yes, Kaeris is a good piece for the crew. If you have her & the mobile toolkit, which is a "must have first for Ramos" unit, you can surge with them 3-4 in a turn. Stacking good cards can win you the game.
Learn to use the SPA's (steampunk arachnids) swarm and scatter mechanisms. Hitting 4 with a swarm is worse than hitting 3 then scatter, 2 arachnids latch on, and hit 1+1, and you can summon a new one with Ramos (just kill the third one for a healing flip) next to the two, swarm, and the fresh arachnid swarm can hit 2 more. Swarms are beasts. Oh, and try to magnetize the arachnids, or buy minimum 2 more blisters, because you'll need most of the time 2 swarms and 6 SPA-s in a 35SS game.
Don't be afraid to blow your arachnids up with the old guy. This way you can damage anything near the spiders without a Df flip. Oh, and the second must have model is the electrical creation. Sadly it's not a construct, but it's a spirit, and floats. You want to summon one once per turn (after the first kaboom-ed in the enemy's face). Don't use Ramos only for digging scrap and summoning, Walk him, summon the EC in the middle of the enemy / on a strategic point, heal your swarms, and spike weak enemies down with Electrical fire. Ramos has 8 Ca, so it's hard to resist.