As always, nice seeing how serious you dig into those games 
I have tested the v1.5 Red Alarm patch with the haptics patch and it seems to work! The game does not crash anymore.
I have ordered a rumble pack from Retroonyx, but this will take some time until it arrives in Germany, so I can not say if the haptics really work. But I am confident that they will.
Yes! Me! But I highly doubt it. It is almost 29 years now since the game should have been released and I am not that confident that it will get discovered.
But yes, a “new” VB game would be brilliant! I have not experienced the golden times where Bound High and Faceball have been discovered, so I am dying for sth new
Yes, I would also tend to 1500 ms delay for Space Squash, but this is only my amateurish opinion 
Mario Clash:
Yes, you are right, I haven´t looked at the demo play since your remark, but now knowing it I have seen it too. The button swap really crashes those plays.
Bound High: yes, password saving is already working, I have the game as reprocard and completed it. “Normal” SRAM saving would be great, but no rush!
Nester:
Nice!! Thanks for this! I will test it this evening or tomorrow at the latest.
Okay, thanks for the hint I only bid 10$ since customs and shipping is expensive to Germany.
Test results:
space squash 500 µs with cheats applied: config change is not being saved. test aborted.
red alarm (japanese version) with patch 1.4 applied: config settings (like level and depth) are saved, highscore also.
mario clash with 1.3 patch: progress and highscore is saved, sram erase function works.
i have attached the save files, mario clahs as clean save after sram clerance.
EDIT: would you mind looking into a possible save patch for Bound High?
EDIT2: and perhaps for Nester´s Funky Bowling if you have time and are motivated ?
I tried to delete my save in Mario Clash (with the 1.3. patch file applied) but the combo L+R+ L-dpad down+R-dpad down doesn´t do anything in the game.
EDIT: save patch 1.5 for Jack Bros seems to work, the one for Red Alarm (version 1.4) not, at least I have no hi-score in the title screen after restarting the system. The level (= difficulty) and display options are also not saved anymore.
I attached a clean save for this version, at least there the combo restarted the game, so I assume that it worked here.
EDIT2: somehow my post didn´t show up.
EDIT3: space squash still does not work. Now neither the progress nor the high score is saved. I have attached a clean save.
EDIT4: V-Tetris save patch seems to work.