I did a system for this season's draw, where I kept it over 5 years but decreased the value of the points year on year (so last season=100%, season before=80% etc.), I also changed the points scoring so that Pot 4 teams would score more points for beating a Pot 1 team than vice-versa, there was also more weighting to the Europa as well and ended up with these pots:
Pot 1: Bayern Munich(125.981), Chelsea(118.263), Barcelona(116.891), Real Madrid(93.432), Benfica(83.116), Atletico Madrid(79.075, Man Utd(74.763) & Porto(70.451).
Pot 2: Schalke(63.301), Borussia Dortmund(61.241), Arsenal(58.203), Basel(56.471), PSG(51.64), Shakhtar(49.458), Zenit(48.833) & AC Milan(47.689).
Pot 3: Marseille(44.63), Leverkusen(42.54), Olympiacos(42.24), Man City(41.583), Ajax(40.716), Anderlecht(40.432), Juventus(40.088) & CSKA Moskva (38.053).
Pot 4: Galatasaray(37.866), Napoli(35.978), Viktoria Plzen(34.753), Steaua(32.606), FC Kobenhavn(32.488), Celtic(30.88), Austria Wien(11.635) & Real Sociedad(11.032).
What that does is automatically promote teams that did really well in the Europa over the past few years as well, meaning that it's performance across Europe. It hurts teams like Arsenal and AC who do the same trick of getting to the Last 16 and then going out and it also closes the gap between pots, meaning that if United had done poorly this season they'd have dropped to Pot 2 and Basel are up in Pot 2 because of big wins v the likes of United, also means the likes of Steaua and Plzen are a good run away from Pot 3.
I also agree that the Champions should be Pots 1 & 2, which would have made the Pots look like this:
Pot 1: Bayern Munich(125.981), Barcelona(116.891), Man Utd(74.763), Porto(70.451), Basel(56.471), PSG(51.64), Shakhtar(49.458) & Olympiacos(42.24).
Pot 2: Ajax(40.716), Anderlecht(40.432), Juventus(40.008), CSKA Moskva(38.053), Galatasaray(37.866), Viktoria Plzen(34.753), Steaua(32.606) & FC Kobenhavn(32.488).
Pot 3: Celtic(30.88), Austria Wien(11.635), Chelsea(118.263), Real Madrid(93.432), Benfica(83.116), Atletico Madrid(79.075, Schalke(63.301) & Borussia Dortmund(61.241).
Pot 4: Arsenal(58.203), Zenit(48.833), AC Milan(47.689), Marseille(44.63), Leverkusen(42.54), Man City(41.583), Napoli(35.978) & Real Sociedad(11.032).
I think that makes it far more interesting.