I know everyone is excited by the recent exploits of Gray and Gore. The latter has ace stuff working outside of his control, which is often the last thing star guys get. So let's say everything works out and the Nats have a #1 in Gore and a good 2/3 type in Gray. Rebuild set for success? Well I have two words for you.
Miami. Marlins.
The Marlins have spent much of the past 3-4 years with a true ace pitcher in Sandy Alcantara, and a very good 2 in Pablo Lopez. They've had cheap arms like Trevor Rogers, Elieser Hernandez, Jesus Luzardo, Edward Cabrera, and Zach Thompson who have been everything from serviceable to maybe also a good 2. They have had a much better rotation than the Nats could probably hope for, and at dirt-cheap cost, and they have nothing to show for it outside a fluke shortened season playoff series. Why? They don't hit.
The Nats, despite their recent outburst, also don't hit. Maybe Keibert can keep up his recent hot hitting, but few people think he's capable of being a team carrying bat. After that Abrams and Garcia trade off who looks bad and who looks merely below average, and there isn't anyone else under 27 on the team right now.
The kids? Ok Brady House looks really good today. But everyone was ready to write him off for Wood and Green to start the year, both of who have cooled down a ton. Hassell is still working his way out of injury one step at a time. And can these guys be stars? Maybe, but remember what House is doing for almost a month in A ball as a 20 year old gets you excited but Soto was hitting .282 with 34 homers in the majors when he was 20. THAT'S a star.
Gore and Gray along with Mason Thompson, if they work out, are Step 1. You need to take Step 1.
But you also need Step 2 (Develop some hitters) and Step 3 (Develop a little rotation depth, and a couple more pen arms) and definitely you need Step 4 (Spend money to fill in the talent gaps).
You don't have to have all this in the majors but it does have to be on the cusp and looking very strong before you can say the rebuild looks successful. It can happen in a season, or over a couple of them, but what's clear today is that it hasn't happened yet. What's also clear is that it isn't even the end of APRIL yet. I'll say it again but stats don't really get real until Memorial Day.
Be pleased, but be realistic. A team has to get to here to get to there but here is still nowhere other than a step on the path.