You might look at this product:

http://www.renderosity.com/mod/bcs/i13-overhaul-m4-edition/94600

I own it, and it fixes about 90% of my issues with M4.

Additionally, if you go to Poser 9 or Pro 2012, scaling is fixed. EVERYTHING now works and is scalable without heroic morphs or tons of postwork. Between these two upgrades, I think you will find a lot of milage left in your old figures.

P.S. I love Tyler, too. If you are going to make a change, that is where I would send you.