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With a trackpad that works flawlessly with all gestures like real Mac, how about a pre-owned MacBook or MacBookAir? Coming back to reality, Dell 12" Latitude laptops are usually pretty good though built-in LCD aren't that great. I would not recommend anything older than IvyBridge these days but an E6230 is dead cheap on the 2nd hand market (<200$/€) and everything works; you can even fit a real Mac wireless card in it. Then there is the Haswell E7240 model but I've no experience with these. Broadwell E7250 are now available in the 200-250$/€ price range and fully supported too though wireless slot is a tiny 2240 M.2 slot so choice is limited. There are 2 x screens available: a basic 1368x766 or an excellent IPS Full HD touchscreen. The i7-5600U with HD5500 graphics and 8GB RAM is a pretty cheap and decent laptop. Whilst they come with mSATA SSDs, the B-key M.2 slot supports NVME SSDs. I can't remember if it can boot from it but I think it can boot from SD card which can be a nice bootstrap alternative. I recently used one and loved it; probably my next purchase. These models are fitted with an Alps TouchPad which is pretty well supported with DrHurt's VoodooPS2Controller version R6 and you can have several gestures, not just scrolling or single-tap clicking. Skylake and later 12" Latitude models will come at a higher price and not everything works, especially as later models come with I2C and poorly supported TouchPads. I understand they also have a tendency to heat up a lot.

There is no new tool for this beyond what existing many years ago and it's not really useable any more with today's macOS versions. There are no readily available ACPI patches either. This being said, I have a Latitude E6230 and I can't say I hear the fan much except, occasionally, when I'm doing something that's CPU intensive and pushes it in Turbo mode for some extended time. Now the fan goes on for a reason so what you can do is use HWMonitor to keep an eye on your CPU T° (assuming you use FakeSMC and its sensor plugins rather than VirtualSMC) and renew the thermal paste on the CPU/under the CPU heatsink. It dries up after a few years and our E6x30 aren't the freshest thing around any more. You've no idea how much good this can do!

I assumed that fixed the HP audio now?

My E7270 doesn't have the touchscreen so can't verify it. There's still no real support for MVNe M.2 SSD drive so I'm installing it to an external USB drive for now. You'll need to set DVMT preallocation in the BIOS to 0x3 @ 0x432 to get full QE/CI like the Broadwell system. I got audio to work with the same codec as my E7450, but after 2 minutes, it starts to become distort. Not sure if the cause is due to booting from USB or not. Can't verify until I could get it to install to the internal drive. SDCard reader has switched from O2Micro which is supported with a simple DSDT patch to Realtec Reader, not sure if there's support to it for now, it' not on the priority list. So far no HDMI audio support. Still testing when there's spare time. Update: HDMI audio working with new boot files.