Have a system quilt of sorts I cooked up.
Base quilt is M50 shell, 2.5oz Apex, zipper on the side so you can open up the inside, regular footbox, silk layer to protect the insul when you open it up. Has nacrobiners sewn into it inside the edges to tie in liners.
Long/tall – 14 oz
1st liner quilt is 5oz apex in a 0.5 oz silk shell. Regular footbox with loops on the edges to fasten into the Base quilt. It can also be used alone.
18 oz
2nd liner is really a hot summer quilt.
I have the materials but have not built it yet.
M50 shell with 2.2 apex or 1.8 Primaloft. It will be a flat summer quilt with a drawstring footbox, with a hole in the middle to be used as an insulated poncho, sleeping quilt etc. It will also have loops to fasten into the base quilt.
Should weigh 8-9 oz
Along with that a goosedown zpacks hood and since I am a hammocker a Hammock Gear 20dF down quilt and a M50 2.5 xp summer UQ.
Sold my old down Snowlion Expedition bag.
Still have my Snowlion Polargurad 35dF bag and one other junker.
If you count the UQs I have 7.