Mei Feng has some movement tricks, but I'm not sure how popular she is in your local meta. I'm the only person playing her in mine.
The thing I'm seeing between your Marcus and Jakob crews is there isn't a lot of model crossover. If you took Mei, you could run Ramos with the same pool of Arcanist Construct models, and if Hoffman keeps the ability to hire constructs outside the Guild, you could run him as well.
Unfortunately, your two Masters don't have much model crossover with ANYONE, as far as direct synergy goes, so it's tough to say "Just pick up X and use your existing models."
In the mean time, proxy every master you can -- between Jakob and Marcus, you most likely have every base size available -- and figure out which boxes you want to pick up. Then watch for deals on eBay, Bartertown, and the like. (I saw the Marcus box, NIB, go for $15 USD not too long ago on eBay, so deals exist.) Metal models clean up a lot easier than plastic ones do, and with the new plastics coming out, people may be dumping their old metals.