I would rank Philly 4th after Cleveland and Orlando. Detroit is 5th; that team's time has come and gone, although they are still a 45-50 win team.
I really like what Philly has done, assuming the get Brand, who will make them much tougher in their half court offense. In addition to the starters, Thaddeus Young, Jason Smith and Reggie Evans are all very useful bench players. To take the next step they need to shore up their backcourt.
Louis Williams is a very good backup point guard. He puts up a point every two minutes, 11.5ppg in 23mpg. Solid defensively. Improving playmaker. Pushes the tempo well and gets the team into their halfcourt offense. Andre Miller's added size/bulk at the point allows Phily to run both guards in the backcourt at the same time which makes it easier for him to be the sole backup guard on the team come playoff time. Willie Green is a solid end of the rotation player as a 9th or 10th man to round out the backcourt.
Their backup big men are very impressive with Reggie Evans, Jason Smith and Marresse Speights. That gives them 5 legit bigs.
They lack a backup wing though. No cap space to add that now either. Needs to be a minimum contract guy but there's a few decent players possibly/likely available at that price so that's a solvable situation. The wing is the one position where cheap additions are easy to find. The player they get will be a short term band aid likely replaced next offseason or possibly in season.
Here's a short list of unrestricted backup wings - Walter Herrmann, Mo Evans, Devean George, Brent Barry, Tony Allen, Quinton Ross, Michael Finley, Jarvis Hayes, Ira Newble, Matt Barnes, Kirk Snyder, Gelabale. They can make something work out of that group. Mo Evans is the dream target but I hope he makes more money than the minimum, if he doesn't he's a coup for Phily. I'd lean towards George for defense, experience and outside shooting. Brent Barry could be very nice offensively but not a great defensive fit for their pressure D. Could be a good home for Snyder.
Evans is the only guy of that bunch that I really like - and who is Philly's swingman opposite Ike? Looks like Willie Green, Thad Young or Louis Williams...none of whom are legit NBA starters
IMHO Thaddeus young is ready to start. Also, Tony Allen would be an excellent fit for them BTW.
Thaddeus Young should absolutely start. Himself and Iggy on the wings would be a nightmarish combination defensively. Both are big, long, strong, quick and very good defensively. They're both good man-to-man defenders, good full court defenders and good help defenders. They'd be able to create a lot of havoc on that end of the floor.
I wouldn't sign Tony Allen to start because of Thaddeus but he could be a good backup for the Sixers. A bit to similar to Willie Green and what Green provides but Tony is clearly far more talented than Green so I can get over that. I'd look elsewhere before Tony but Tony would be good for them
(Tony would be excellent for Toronto, I'd love to see him land there).
Edit - Kareem Rush would be an excellent addition for Phily but he's unrestricted. Indy are loaded on the wings so maybe he scrapes free, if he does I don't see him making more than the minimum until next season.