First off, I seldom if ever have strong expectations, good or bad. Too much randomness in baseball for me to comfortably do that year to year.
Obviously health issues are a big factor, made bigger if Yelich is out for any amount of time. And no one has been consistently hot enough with the bat to cover for that. Contreras has been OK, not red hot. Turang has been so-so, hopefully Sunday launches him into something better. Sanchez has been productive but isn't out there every day. Mitchell has been productive at tines but that's tempered by never knowing if he's going to even touch the ball. Frelick & Rengifo are people that can help pick up some slack; their career numbers prove it. But they've both been poor.
I think the pitching will be, for the most part, fine. Part of what happened this weekend is attributable to Washington putting up a ridiculous number of smart, effective ABs at just the right time, helped along by uncharacteristically poor defense. Credit to them.
And part of the issue is the farm. You have people in AA who are performing but most likely aren't 'there' yet, and the ones theoretically closer (Williams, Pratt) aren't hitting right now. Lara is as hot as can be but after only 13 games at the AAA level & age 21 it would take quite a leap of faith to call on him.
I feel OK about their ability to weather the storm until they get healthier IF hitters reach their norm & we get back to the 'woodpecker' mentality, and pitch & field at a level we're more accustomed to.