I'm also all in with lightweight trips. Besides a 14' NRS raft I have a 17' Folbot Expedition Kayak and a 14' SOAR (which is like an inflatable, self-bailing canoe built out of Hypalon fabric) and. I do a lot of multi-day motorcycle rides on a KLR 650. The bike has the least capacity but doesn't require a groover, fire pan, or multiple days of food and water. The smaller boats can carry a hundred pounds with ease but a lot of my river trips have been on unpermitted stretches that require some portaging, so that's another reason to stay light. For that job an NRS Portage Pack is great, then I hang small dry bags over the paddle and shoulder that. I don't think they make the pack anymore, but it is uniquely functional.
When on a section requiring fire pan and groover, I use a NAPA galvanized oil pan and an Ecosafe Boombox. In the raft, I'll add a Paco pad, roll-a-table, full sized cooler, and folding chair for comfort. Otherwise the list stays the same.
My stove is an MSR Whisperlite International. Why not a tiny little screw onto the fuel canister type? I really worry about stability because spilling boiling water on my hand or foot would suck. The low and wide stance and wide cook top of the Whisperlite makes me feel a little safer. I pack it into a small, padded case from an old camcorder, along with a titanium pot, steel cup, spoon, some spices, a scrubbing pad and a little soap. On rivers this goes into a dry bag with food for short trips. For trips more than three days, I pack it all into a plastic York box. That's a little bulky but way better for deterring critters. Unfortunately they are no longer made. On most trips I also bring a high quality steel thermos. It is bulky and heavy, but I only heat water once in the morning and once at night, which saves a lot of time and makes cooking easy, or a hot drink simple and fast in cool conditions.
I like to freeze some meals like home made stews, soups, chili etc. in single meal sizes and pack them in a small, soft cooler. The frozen food keeps stuff like cheese and salami cool for a few days. I don't spend money on freeze dried, just pick up some instant potatoes and add a can of roast beef and a small mixed veggie, or some beans and rice with smoked sausage, ramen with tofu-miso soup packet and maybe a little tuna... store bought is cheap and easy to portion. I do like whisky in the evening and good coffee in the morning. Check out the AeroPress, it's fantastic.
My longest solo was ten days on the Escalante. This involved some rugged portages so light weight was critical. I used a folding bucket and alum to settle out the silt overnight, then pumped it through a filter in the morning. I don't know of any purification method that can handle heavily silted water for days on end.
The bedroom is a Therma-rest quilt and pad in a Big Agnes Copper Spur tent. The pad goes into a Therma-lounger for a camp seat. If you haven't looked at new pads for a few years, they've gotten a lot better: the T-rest is almost as good as my Paco pad for comfort, though not as wide, and packs up about the size of a Nalgene bottle. I've camped over 100 nights in the tent and all I've had to do was replace the ground cloth.
Even if I'm on a trip with others and/or using the bigger boat, I like to do my own stuff other than share the toilet system. The communal kitchen that most permit trips use really slows things down. Not only does it rob you of leisure time, the kitchen boat is often the last to be ready. I find it infuriating when a trip can't get off the beach till 11:00 due to the complex community kitchen, because that's about when the wind starts to blow up canyon. About the only way I'll go on a lavish trip is if they have a permit on something really special. I've done a lot of lightweight trips with a good friend, and we still pack as though solo. No hassles about menus, camp chores, etc. plus if one of us did lose some stuff, the other boat would be able to fill in.
Finally, I like my raft to look clean, not with a huge mound of dry bags, chairs, and buckets filling the aft section. I can easily go over the baggage load to shore or another boat if I need to. Of course, that leads to people asking if I can carry some of their shit...