It's also a question of time ... race days are long enough for most anyway even with people like Stuart W' running the meetings in his usual clockwork fashion!!!
Think about it, If I can hold my finger against my motor for more than about 10-15s after a run I gear up (I like my cars part race car and part griddle
). I'd not be happy putting my car back on track within 10 mins of it finishing a race distance, I know many people who are the same.
With that in mind if you had to allow somebody in the bottom final at regionals (say a H final) that would be 70 minutes extra on the race day. If you weren't going to allow that sort of time you would be disadvantaging some people over others which obviously can't be part of any democratically arranged set of regulations!
All that is before you consider that you would have to run all 3 legs of the A at the very end of the meeting in case Joe Bloggs hearo'd his way out of that H final,that would mean another hour extra too.
Having done some rallyX and having had a few bad day with several bump ups I can tell you it actually can get really difficult to deal with .. concentrating for that long is hard work (at least for me) and on a couple of occassions I deliberately let people have track position just "to put an end to it".
I might be in the minority and I know I personally have never been adverse to change (I remember when we always did FTD and didn't have a tire rule ... thank god for nominated tires and round-by-round i say) but I just don't see bump ups working in electric racing.
Also finally god knows how your getting 4 runs out of your 5000mAh cells, I'm running 5500s and I'd be 95% confident I'd dump before the end of the 2nd run as even though we typically only take around 1800mAh out of the cells as the charge disipates the voltage drop seems to be more agressive under load.
I have my LiPo cut off set at 3.2V/cell and at the point my ESC puts the car into 'limp home' mode I have a rest / no load voltage of around 3.85V/cell. Putting that pack back on the charger sees about 3000mAh put in to fully balanced.
There is another point .. think about what people would do to make that last run ... how many would turn off ESC voltage cut offs to get a few more mAh out of their cells resulting in lots of LiPo's thinking it's November 5th?????
Please make this idea go away .. pretty please!