Forgive me if I'm asking things you've already explained elsewhere.
Necessarily complex - how so, in that it can't be covered by equity (Canadian, American, developed-ex-N. America, and developing), and bonds (Canadian short and long, or just a single ETF), and perhaps REITs?
If you're asking considering your CURRENT allocation - what I did when I was trying to work out what I have where in my completely unneccessarily complex portfolio was make a spreadsheet. Stick stuff in, hand-wave a bit, and come out with rough percentages - discounting the value of anything in an RRSP by ~20% because I'll pay tax when it comes out.
Not great by any means (for example, I have VXUS, and I really made approximations of what regions/buckets things were in - but honestly this was the worst fund, in that it is... well, world ex America).
Or do you have to have actual mutual funds that are... "themed"... or something? Rather than the straight forward "Canada" (ZCN, VCN), America (VUN, VTI), etc?
Excel's pretty good...