It's funny I was in the process of taking pics of my new Battletech projects last night. The old Btech plastics are beyond horrible, If you would prefer to work with some resin casts just let me know. The newer plastics they have in the 25th aniversary box are considerably better but it's just no substitute for the metal models.
Battletech is something like 1/300 scale, the infantry is 6mm. Mech sizes are all over the place some of the "small" light mechs are as tall as the largest mechs in the game, the newer mechs are even worse in terms of staying on scale as they have had a major amount of scale creep. Battletech doesn't adhere to a hard scale as it's meant to be representational as in the rule book they state that if they went with a realistic scale you'd need to be playing on a football field to accomidate the weapon ranges.
One interesting thing about the game is that multiple units can share the same hex locations (but not mechs)
Anyways I'll be watching this for sure as I always love your painting.
ps plain old model glue works best for that cruddy plastic, supeglue doesn't seem to work all that hot on it.