You sound like you are looking for the justification to buy a new printer. If your current machine is preventing you from making the things you want, get something that will allow you to make those things.

You want recommendations? Prusa, what you get beyond the initial price is worth it. Bambu, the Apple of the 3d printing world, lock in included at no extra cost. Qidi, a cheaper printer with features that make printing more difficult engineering filaments easier.