Lavoy Allen is a good pick-up for Indiana. I hope they give him some good minutes off the bench. He is a better rebounder/defender than Scola (who has really fallen off a cliff this season efficiency-wise), even if he is outright hopeless on offense. I actually think he fits their system better than Scola does (who, I must say again, has looked terrible this season. His shooting splits are putrid, he turns the ball over almost 3 times per 36 which is inexcusable for someone with such a low usage rate, and his defense is atrocious).
Evan Turner I have never been that high on, but replacing an old and injured Granger with a young player with upside is the right move. Turner is a good rebounder for his position, and is pretty much right smack in the meaty part of the bell curve (i.e. average) on defense. He has decent court-vision, but makes too many risky passes that end in turnovers. He also gets to the line a lot. It will be interesting to see if his shooting improves not being a starter - as it is, he has been a high-volume low-efficiency chucker in Philly.