A huge thank you to all that have taken the time to comment on this post. Special thanks to the company owners that have shared their thoughts on this matter!
At this point I have made a decision to focus on two different weight levels - giving special attention to the lowest weight level and than brief mentions for a secondary/heavier weight level. This just seems, and feels, like the right thing to do.
I have already been in contact with four different companies and hope to contact at least two more this upcoming week. I have not contacted any company outside of the USA as I have little experience with cottage outdoor manufacturers outside the USA that specialize in UL/SUL shelters. I welcome feedback from anybody out there that has knowledge of TSW sub-three pound two-person shelters.
For this spreadsheet I will be adding the following three bits of information that the solo spreadsheet did not include: (1) Square Feet of Inside Usable Space, (2) Max Height Inside, (3) Number of Doors.
I hope this will not offend anybody but I will be using the square feet of *usable* space inside. By that I mean I will be *attempting* to calculate the square footage of the inner/net parts of the shelter. I do not want this to seem like I am trying to kick against how the industry does things, but at the end of the day, when you and your spouse has just finished hiking 20 or 30 miles, what really matters is how much room you have inside of your bug net... how much space you actually have to move around, to sit up, to get dressed, change cloths, setup your bedding, etc. So this is going to be a bit different from what the manufactures probably list as the "square footage" of their shelters, but it seems like the proper way to approach this issue. If anybody out there is good at math and figuring out square footage of the inners/net sections of my shelters, I would love to have the help and will very much give you credit for the help (if you want it).
It would be nice to be able to list "usable height for both people" but that is just not something I think would be at all realistic to calculate. So I will be forced to list the max-height of the inner/net part of the shelter. This is obviously going to favor some over others (i.e.: MLD DuoMid verses HMG Echo II, which are the highest and shortest two person cottage shelters I have listed at this point) (for those interested... the 'Mountain Hardwear SuperMega UL 2' seems to be the lowest shelter I have come across, at an insanely short 36 inches of interior height - and yes, that took a fair amount of hunting to find one that short lol - also fyi: the 'Big Agnes Fly Creek 2 Platinum Tent' is the second shortest at 38 inches -- for those that find it interesting that the big-name companies are producing shorter shelters than the cottage makers)
A few items suggested above I want to quickly address:
Setup Times (Henry recommended this) This actually is a good idea. I am still pondering on whether to add this into the spreadsheet. At this point it is not in there because it seems like one of those issues that could vary a bit, as well as trying to get accurate numbers on this from the manufactures could be, well, difficult. What does everybody else think about adding this? If a lot of you guys think it should be added, I can send off another email to the company owners asking for this information and an apology for not asking it to begin with.
Also had a couple of suggestions to handle the costs differently. I very much understand what both of you who suggested different approaches are getting at. In the end I am just going to keep it how it is... cost per gram/ounce. Again, totally agree with the recommendations and looking back on things, I probably should have started my solo spreadsheet with the suggestions, but I did not and so just going to continue on with how things are. I did give it some serious consideration though.
I had somebody contact me asking me if I was going to do a section on just double-wall shelters. I gave that some thought too but decided against it due to the time investment issue. I already have around 9 hours invested into this article/spreadsheet and I expect I will have close to 30 hours by the time I am finished. As Ron said above, I am not getting paid for any of this, so to turn 30+ hours into potentially 50+ hours as I do research on double-wall shelters is not something I am interested in doing.
Unless I have some delays in correspondence with cottage owners I should have this article and chart finished up within the next two weeks, well ahead of my initial November target date. But, no promises. Sometimes businesses are closed and nothing I can do about that. Hopefully they are out on the trail somewhere eh!
Lastly I would just again like to invite any of the cottage owners out there, that I have not already been in contact with, who produce two-person shelters that are sub 1300 grams TSW to drop me a quick message and I will do my best to respond to you as soon as possible.