Introduce a "Dummy block" that has as stats 1 HP, 1000 kg, 1 AMP, and is not allowed into battle, so we can test our bots behaviour when complete, but before actually building the bot proper (as in, having the absolute bare minimum on the bot)
This would allow to test how the movement parts selected would behave at the desired bot mass, without having to spend hours building the bot to realize that no, the bot does not behave as expected
#Dummy Block
dry salmon
celest tusk
Why not just move the validity check to when choosing your loadout of bots before battle, and allow testing of any bot
dry salmon
because a half built bot will not weight as much as the full built bot