Absolutely. At this point, it's totally fair to wonder whether we'll get anything from Trout and (especially) Rendon, but you also don't have to squint too hard to see strong seasons from either or both. Neither is particularly old. The vets, like Ward, Drury, Rengifo, and Hicks all were above average hitters last season. The kids - O'Hoppe, Neto, Schanuel, Moniak, and Adell - all have to some extent the ability to break out in a big way.
But, like you said, Trout and/or Rendon could have just another crappy injury-filled season, the vets could regress, and the kids could fail to take the next step, and we could have a bottom tier offense. There's a ton of volatility - and my biggest concern is that we really need more infield depth. Bringing in a JD Martinez would be huge, imo.