It would also be worth finding out how often your work location is likely to change. There's important differences between "this week B, but I'm trying to get you moved to C, and eventually A" and "you work at B. Always B".

I have gone for "low starting wage, review after 6 months with explicit pay rate or fire" and in all but one case was put onto the higher rate between one and two months later. In the last case they waited six months then tried to negotiate the salary down. I had to go to the company owner (who I'd made the agreement with, and it was written into my contract) before they paid. That was only one reason I left before I'd been there 12 months, but it was characteristic of the problems. It was a bad match on several grounds.

I've been in this situation and I found that a combination of status updates and not answering the phone works 99% of the time. One employer instead wanted to give me a cellphone, until I pointed out that my contract specified average hours of work and of course time spent dealing with the work phone would be part of my working hours. Suddenly it wasn't so important after all :)

Part of the point is to interrupt their meeting, so that in future they will close the door themselves just to avoid the interruption. It's also very hard to complain about "hey boss, when we have meetings this rude person who sits near the room keeps closing the meeting room door".

I would be inclined to phrase it as "I know of the policy, but wonder if it is flexible or whether an exception could be made since {all your reasons}"

Thinking about this, it's also good to make sure that as much as possible what you'd want to say in an exit interview gets said while you still work there. It's IMO better to leave saying "I told you this needed to change, it didn't, so I'm going".

I would work on the spelling and grammar of the letter more than the author of this quick sketch has, though. This is a content guide only! And do try to get your gender correct, if only to avoid misunderstandings.

So when you get hit by a car and end up in hospital for a week, what happens? Does your boss eventually get around to calling you and say "hey, I've noticed you haven't been around much?"

What would be a useful answer to you? At this stage this reads like a rant. I'm more interested in the management/ownership politics than the "I worked hard" part - what are your relationships with the owners like, since you seem to be dealing directly with them. How you asked why? Have you made you desire for equity explicit? What was their response? Are they dealing with you indirectly via email or something where you can ask directly?

do you mean "make you feel more appreciated" rather than "more appreciable"

Sorry! I read exclamation marks as shouting! That's ridiculously old school, I know, and probably pedantic. What do you use them for?

FWIW I got a raise from $85k to $100k based purely on performance within a role (programming), so it's not completely out of the question.