In general, Triple-Changers (except for Minicons and Symbiotes, which were classed into their own categories regardless of the amount of altmodes) are considered to be;
A) Potentially dangerous (for shitty reasons)
B) Incredibly useful (for good reasons)
Which really made them a sort of functionist nightmare to keep track of. There’s a reason most triple-changers defaulted to the Decepticons both early on and after the Senate push-back led to the violence, and it’s that having additional altmodes meant that mechanisms spent their life under constant scrutiny and had very, VERY narrow lines they had to walk for professions.
Triple-changers are also unfortunately more likely to suffer from certain problems- such as emotional/behavioral issues (most triple-changers have what would be considered Depressive, Manic-Depressive, Disassociative, or ADHD-like behaviors to humans) as well as difficulty remaining fully fueled, as their sparks are higher-output and thus require greater energy intake.
Oddly, some combiners (duobots and up) are sort of triple-changers, but do not have the same effects as Triple-Changers do- instead this is believed to be a product of the combination process (IE Overlord being able to turn into both a tank and a jet, while being a combiner formed of a tank and a jet).
Triple-Changer (or four-changer or six-changer etc etc) altmodes almost always have different forms of movement- you’ll seldom have a multi-changer who has multiple forms with wheels, or legs, or wings.
In Which The Duke of Aumerle Contrives to hide the deposed Richard In his Bedchamber Without The Knowledge of his Father, Mother, Their Servants and Most Notably His Cousin Bolingbroke (part 8 /19)
“I don’t believe this,” Henry muttered. “A month. He’s been gone a month!” He crumpled York’s letter in his hand and flung it in to the fire. The flames hissed and crackled as they consumed the parchment in seconds and turned it in to pile of smouldering ash. If only his cousin were so easily dealt with. “This is ridiculous; how can he have been gone a month without anyone noticing?” “At least when you catch him you’ll be able to hang him.” Northumberland lounged idly against a pillar.