Sure, but given your extensive list of ‘grave’ limitations I really don’t think that you are going to find something that satisfies your particular requirements, certainly not each and every one.
256 patterns per project is quite a lot, imo at least. 128 flex samples (and 128 static, so 256 in total) per project is also something that I never really had too much of an issue with when I had an OT, but one way of overcoming this is using sample chains. The RAM limitations are frustrating, and are one of the reasons that I was quite happy to get rid of my last OT and haven’t looked back since, but it is worth remembering that it is a mature machine, and the RAM specs kind of reflect what probably would have been perfectly acceptable 13 years ago.
This, and that 256 patterns per project would be a problem for you, and the issues with the RAM limitations, and the seemingly large scope of your projects, are why I think what would suit your needs best would be either a DAW/Max (certainly a computer) as it sounds like the scope of whatever it is you’re working with would just be unruly and a total headache to try and work with on hardware