I'd say the starting pitching in general is concerning. Even with Burnes the projections seem to have him in a negative trend line with rising ERA and falling K/9. Within his range of outcomes you could see him being not much better than average. Hopefully the contract year gives him every incentive for a max effort year but the spring numbers weren't great.
Grayson definitely has some uncertainty, Wells has durability questions, and Irvin and Kremer are what they are. No idea what to expect from Means. Probably some will outperform and some will underperform adding up to about what we expect, but there is definitely potential for some ugliness.
I feel better about the bullpen but still some concerns there.