100% - and sometimes you even just end up with genetics that together create something special to run through. Each combination is so unique, depending on how each plant breeds. Sometimes you run an F1 population even, and find some really unique expressions that weren't really too prevalent in the plants used. But I do like F2s for their recessive traits.
When it comes to flipping seed vs clone - it depends at which point in the project we are. When we are running testers we will run them from seed initially and flower them out, because we want to gauge what the average grower would get out of them. No good having plants that thrive from clone but grow terribly from seed.
But you're right, we typically run plants from cut for quite a number of times before ensuring it's worth working with or sticking around and we do still take cuts of our tester runs, as you never know when something special pops up. It's not uncommon for me to have 50+ cuts rooting at one time. This can be a bit of a pain, but with just 2 of the regular clone domes (large ones) you can typically fit around 36 cuts. So just two of those is typically enough. To help minimize the requirement of cuts at one time, I take 2 cuts off each pheno just before flip and then if they haven't rooted by week 2 of flower, I take 2 additional cuttings as backup. Usually, 90% or more of cuts are rooted in the first phase.
Backcrosses are good, but they are also best used when you really understand the genetics and the way they breed. BX is typically used to re-enforce certain traits. The plant you backcross to will be re-enforced by bringing more of those genetics back into the line. But this can also go really wrong if you backcross to a plant that has negative traits (stretchiness, low yield, etc.)
I personally think it's important to test out a few beans of anything before gifting them out even, just so one can give them an idea of what to expect. The impacts of someone getting a tent full of herms can permanently impact your reputation and those people won't remember whether they were free or not, just the experience. Or just make sure they are aware its untested.
If one isn't breeding with particular goals in mind, the other option that is good for just running through beans to find something special, is to do an open pollination with multiple males pollinating the same females at the same time. While this means you can't really reuse a male, it does mean the resulting seeds will have more diversity. If the goal is simply to find something special.