While generalisation has its problems .... the suggestion that folk do the following ..
"I was thinking more of the case where guys (gals) line up by following ..."
defeats the philosophy behind the use of rolling starts.
However, one needs to consider where the critical TODR/TORR/ASDR start for a particular aircraft/runway/ambient combination. If the roll starts several thousand feet before that point, the significance of the concern is less .. other than for the quite important question of standardisation in operational practices. So, for instance, SYD 16R, from past memory ... is a LONG runway for most small birds ...
.. and, as most of us probably can attest, having hit the TOGA switches ahead of plan during the initial takeoff roll ... the consequence is only one of coarse use of pedal steering to minimise any embarrassment .. directional control of the aeroplane is not a real concern.
The consideration of actual weight is important .. at high GW, one needs a fair bit of thrust to achieve breakaway so the problems with a tardy thrust setting is not so significant.