Oh, so true Zebidee...
And then of course doesn't the GreenAntz count as real innovation?!
Although that actually began last year really, hunh?
I only finally got to use mine in 2021

GreenAntz actually began sometime early 2018, though the ideas had been floating around in my head long before that.
Innovation is still progressing in that space for 2021. There are smaller, boxed, SMD versions to develop. There may also be kit versions available if it can be simplified enough.
Specifically thinking of people like you here Bobby - there is more work to be done to make it easier to use GreenAntz directly in arcade cabs and with game PCBs. This is an awkward space to provide guarantees for as every PCB is different. Managing the RGB inputs is easy enough, but managing non-standardised sync input levels is not. I have some ideas, but of course more testing required.
The solution might be a version of GreenAntz designed specifically for use with arcade PCBs, "no soldering required". Standard arcade monitor video input connector, alternative screw terminals for non-standard video and power inputs, onboard pots for tweaking RGB input levels and adjusting circuit sync operating voltages ("sync pot"). Now I've actually put it into words, I think that is the solution.
On FPGA, I think it is the next big thing in arcade and console emulation. There are already many advantages over PC or Pi-based emulation, or a 60-in-one PCB. A MiSTer unit, for example, is like getting a whole bunch of consoles and historic computer systems in one little box. Imagine how convenient that is, no need to dig out your old consoles, no need for video/audio signal switches to manage a dozen different input devices, no need for original game media. The level of accuracy is very high. For the moment upgrades use the same hardware, which is great. Of course FPGA will never replace other kinds of emulation completely, but I think it is a great thing to have in your living room or in a cab.