Personally, I would just bite the bullet and play a ...d5, ...e6, ...c5 system. I think these positions have a lot more life than people give them credit for.
Regarding "
Essentially, I see no reason why White should not be at least very slightly better in the London and Colle positions above (since in the Colle position he is up a tempo and in the London position he has developed his queen's bishop outside the pawn chain).":
Black has full equality because of his slight space advantage based on the move ...c5. If White doesn't do anything particularly ambitious, there are generally chances to break with ...e5, at which point, if anyone is better, it's Black.
That normally leaves the plan of playing Ne5 and f2-f4 (in the London and the Colle-Zukertort), which is a good and potentially lethal plan. That being said, it does abandon the e4 square, meaning that Black has good counterchances based around the idea of (assuming ...b6 and ...Bb7 has been played) going ...Ne7 followed by ...Ne4, planting the Knight in the hole, then, if possible, following up with ...f6, excevating White's Knight from e5.
Sure, it isn't the excitement of the Noteboom, but against a weaker opponent, I see no reason why Black shouldn't be able to aim to smoothly outplay White.
I'm not sure the previously suggested 2...c6 3 Bf4 Qb6 is likely to give Black anything more "dynamic". It looks interesting on the surface, but I think it just amounts to a slightly better for White, kind of stodgy position.
After something like 4 Qc1 Nf6 5 e3 Bf5, granted, if White is playing his "system" moves without looking up from the board, he has no hope for any plus at all, but the position cries out for 6 c4!, when eventually, c4-c5, b2-b4, and so on are likely to happen, and (at least personally) White looks far more comfortable.
All this being said, I fully admit pretty much all of the above comes down to personal preference