For the filco, would recommend swapping the keycaps with something else, filco caps aren't really that good. DCS keycaps from signature plastics seem like a good fit for them, gmk caps work fine too but I heard there is some interference with the costar stabs.
I would also personally replace the internals with a replacement PCB and plate, because cherry stabs are a lot more convenient for pretty similar results, or at least modding the switches by spring swapping the switches with something like 55g tx springs, lube the springs with 105g0 and then resoldering. But I would understand not doing that because those parts are pretty hard to come by and also desoldering filco boards sucks because the solder isn't leaded.
With the unicomp, there really isn't too much to do with it. Unicomp boards are boards you don't really need to tinker with. It's pretty good stock.
