Discussing fashion with Debi, Jasmine, and some others, Debi had a cool idea about how to deal with limiting avatar complexity. I dub it a "trigon budget". The idea would be that each attachment would indicate how many trigons it has when worn. As you add attachments, you would see how many total trigons are used. If you exceed a fixed budget of trigons (e.g., 5 x 8k = 40k), you simply cannot save your avatar in Lookbook.
One benefit of this is that you could increase the number (unlimited?) of attachments allowed.
This could seem to add complexity, because now people have to think a little extra about their budget, but this would also encourage designers to improve their own trigon budgeting skills.
This budget could also apply to the avatar's main shape, too.