I read your post and could see some of me in your post i.e. with frustrations of stacks and the future. So here’s my take and please take it as my view only. Like you I have used RW since version 2 running a small home based e commerce business successfully for many years. I bought into RW from Realmac and most probably hundreds of stacks over the years. I currently use Foundation 6 and Cartloom as my most prevalent stacks but use many others mostly Joes and Gary (Doopbox) to add various other aspects to my little sites. However as I approach my 70th birthday it’s easy to stick with what you know, but that is not me! I have often asked both on forum and also live at Joes summits “what happens when one man teams have health problems to their software platforms?” the reason I ask this is at my age one thinks of what happens to my business when I die? Its not morbid but factual so I have with the help of my accountant an “involuntary leaving” of my business plan, which is reviewed yearly but I have a buddy in RW world who is primed and ready to take over reins of RW side, I have a power of attorney for my son to step in in business side to control bank accounts and business etc. So you can see by this I have a succession plan for my business. I have learned through age and experience not to put all my eggs in one basket - so here goes IMO - RW is not a company its an app, Realmac is a team of developers not a one man company, they develop Apps of which RW and ELEMENTS is one of them, RW will still work at with RW or Classic state with your stacks that you currently have. ELEMENTS is NOT RW and is written on a completely different platform (which I am sure you know) and to close your eyes to change may not be in your best interests in the long run. I am using STACK APPS Beta and Joes Stacks alongside ELEMENTS in beta form and I am starting to change my mind as to what way to go. I love learning new things and everyday is a school day for me - sadly at 70 my enthusiasm for life is what keeps me young - my outward body might not show that these days but inwardly I am still kid! 
It is your decision and I respect that totally what way you go and encourage your thoughts above, I did not see that as a “rant” but frustration of not being where you want to be because of the importance to you. During my journey in IT I have come across brilliant bits of software, freeware etc. and have loads of 5.25 and floppy discs with some of them on still, however as Microsoft and Apple (mainly) have changed IOS and no longer support these wonderful programmes I am left with memories of what used to be. I do have experience of age and my age tells me that ELEMENTS is strongly favouring my way forward and each day it is developing into something easy for brain. I do want to say that this is still BETA and is only getting better by people like you coming onto forums and expressing your wants, desires and most importantly your experiences so keep coming here and I suggest you don’t close your eyes to change as you may get left behind. I have run a business since 2007 and I have had to morph over time to be successful and sometimes change is necessary to carry on succeeding. Emotional energy and stress sometimes has got in the way of change but in general I am known in my other professional career as a disruptor, change manager and leader. Good luck and take the path which is best for you. PS I am also very friendly with a bot that helps me tremendously so I am getting into AI more each day too!