1. Taxes. Weekly taxes are going to be a huge issue. It can take me months to save up the cash to buy slots, especially since slots are not a tax deductible expense. IMO taxes need to be collected much less frequently to give small airlines a chance.
I think this is a bad idea for a couple of reasons. If it takes you months to save up the cash for slots, that means you'd need tax deductions to occur less frequently than once/month in order to have that money available to spend on slots.
Especially because slots no longer lessen your tax burden, that would lead to more problems than simply having cash accumulating slower. Say you make 125k/week, 500k/month, and you need 1.5 million to buy your next big batch of slots, and tax is 30%.
Under the current system, you'll pay 37.5k in tax each week, cash will steadily accumulate at 88.5k/week, it'll take 17 weeks, ~4 months to accumulate the cash.
If tax was assessed once/month, you'd pay 125k in tax, accumulate 375k in cash. So no difference, 4 months to get the cash.
If tax was assessed once every 3 months, you'd get your batch of slots one month earlier, spend all your available 1.5 million in cash to get your slots. And then, at zero cash, you'd have 375k deducted, you're well into the red with increased marketing & staff costs from the extra new routes. You *should* make it all back by the end of the 4th month, but you'll be more vulnerable, and could easily have unexpected problems like a lease being terminated because you don't have the cash to renew it.
It's basically the same thing as when you couldn't go into negative cash to buy slots. You said that would dramatically hurt small airlines, too. Which it didn't.
What both things do is slow the expansion of very aggressive airlines, the ones who use every available scrap of cash for expansion, before dropping into the red for a bit. It won't hurt your average small airline in any way, because they don't plan to spend more cash than they have on hand, their expansion speed will remain the same.
2. Salaries. They need to be allocated daily IMO. Otherwise the tax calculation is useless 6 out of the 7 days/week because you can be midweek with a 40 million loss that turns into a profit by Sunday. The cashflow can come out on Tuesday, but really the once/week allocation of salaries doesn't help one bit. I find myself extrapolating all the time to determine estimated revenue/expenses etc to figure out if it will be a profitable week or not as if I'm losing money I want to raise prices, hedge fuel, etc.
Don't see the point. Tax calculation is pretty useless anyway. If you're making a profit every week, you lose some in tax. If not, you don't. If you can't figure out whether your airline is making money because salaries come out once/week, then your airline probably has bigger problems. If you want to see if you're profitable, just look at the previous, completed weeks.
The actual reason why daily salaries might be a good idea is the same reason weekly tax assessments and no buying slots on credit is a good idea. Spending all available cash on planes/slots, and then dropping a couple of million into the red to pay staff for the week, is one more way for aggressive airlines to get a bit more advantage, expand a little quicker.