I agree, but Tudor has been kind of outspoken in his last two press conferences how his players aren't good enough, and he has to play his single best starting lineup.
Frankly, if Pelkas is in a slump, I can't see why Mistakidis isn't starting there. He must be chomping at the bit to get some game time, and he's been consistently good for us.
As for Konstantinidis - agreed, again. Kitsiou is not a drop in quality from him, and should be in the rotation regularly.