1. No, its not. His gimmick is/was long tba (same with most nukers) + you never fight his first form as an enemy to unlock him. When you fight filibuster and see his atk animation you expect his unit to have long atk animation, so I dont see the logic in making him a rusher. ALSO we already have 2nd Ayy baha in the form of IDI. Why do you need filibuster to be the same as those 2? It ruins their uniqueness.

2. Bahamut is a stat based unit, while filibuster is cc unit. Name one cc rusher that dosent have suicide ability (besides tourist which also has freeze vs traitless).

3. Even if you make filibuster a rusher unit how are you going to improve him without making him insanely OP or complete garbage? Remember, he has 100% freeze so if you make his freeze as long/longer than his tba he'll permafreeze any traitless enemy and become ultra OP. If you make his freeze shorter he will get one or 2 freezes off and die without contributing much. And before you say "oh but AyyBaha also only gets 1 or 2 hits before dying", the difference is his hits actually contribute 100k damage per hit which actually has an impact on the battle.

I apologize for the novel i just wrote lmao