I highly doubt that Krejci is actually injured. Far more likely that he's just taking an assigned rest, which is sensible policy. If he misses a second game then I'll worry about him.
I have no problem with Heinen being scratched. His last couple of weeks have been poor and it won't hurt for him to be made to sit and think about his game for a bit.
Backes back in is fine too, but he and Ritchie should never be in the same lineup. I'd prefer just David.
I don't mind Lindholm, but there's no way he should be anywhere near the 2nd line. Will be surprised if he actually starts there. As a bottom 6 backup center he's perfectly competent, but that's well and truly his ceiling.