Bubbles??? How hot do you think we need to get? I would expect that we could stay reasonably below boiling temps. I am a Yank so I'm thinking in Fahrenheit, but I'll try to do metric conversions as well.

Boiling point of water at sea level...212 F /100 C
typical room temp.... 72 F / 22.2 C
expected heat of water for heating resin to comfortable 100 F.... 120 F / 48.9 C

There should be no bubbles. I don't think we need to get crazy hot. The resin I was thinking of when this thought struck me was Wahoo Int. ZeroVOC. They recommend heating to 100 F to thin the resin down. Most resins, even UV cure resins will go off if they are heated too far.

The way the Peachy is set up, I would heat the standby reservoir and have a well insulated build tank.

As far as how it could help to speed up prints, a thinner(lower viscosity fluid) can move into the next layer faster. Less time waiting for the resin to get into place before the next layer prints means faster overall print times.