Reminds me of my own son. He is only 2 but loves going up to my cabinet and pointing at them and saying "Who's that one?" then repeating the name once I tell him. Due to his age he can't really transform them yet (apart from G1 Seaspray which I gave him) so at this stage I don't have much to worry about.
Back onto topic, geez I must be getting up to at least 75% complete by now. Mostly only missing Pretenders and Action Masters (do they even count? :p ). Not really fussed on collecting either of those lines so might just end it once I finalise 1984-1988 and micromasters.