For me I start at 4.40pm everyday so its not a case I can't reg on time, issue is it can really affect my other tables as its peak time 8pm for me and I have already starting trimming tables from 12 to 8 because of UKPOS this week as no time banks and 15 secs to act and all 6 max. Around that time I can already be playing heads up or fair few short handed tables.
We always end up with at least 6 by the end. So increasing stacks and having same start time, I don't think will make much difference if we started at 9pm. we our regular stacks.
I think some people either get in work late, or need to put kids to bed so late reg or some prefer to late reg as may play like me from early evening lots of tables.
So I suggested 9pm start no late reg so no gets advantage late regging and everyone can play.
If we did maybe even 8.25pm start no late and same stack, that may work as I know not everybody wants to be up past 10:15pm as some people have early starts for work,