It's getting closer and closer to bring up a bunch of guys to see what you have for next year. Not a bad idea to get their feet wet now as opposed to the start of the year. I don't really care about service time issues. If they look the part, you should be trying to buy out their arbitration years anyway.
It's sad to say, but there isn't a positional player on this team I care for. I can't see any of them being here beyond year 6. Not saying they all should be moved immediately as Adames, Tellez, Renfroe are fine but none of them are franchise cornerstones. Adames you could debate especially if he bounces back next year.