What do you need ideas for, you already know the answer.
I used to run a lot of carbide bore bars and we were able to push them pretty hard.
Carbide is stiffer and denser than steel so a carbide boring bar deflects less the a steel boring bar under the same conditions and is much less prone to chatter.
I will admit sometimes it is difficult to convince the people signing the purchase orders that it is worth paying twice as much (or more) for a carbide boring bar because they often cannot comprehend that the cost difference is recouped in reduced run time. You need to crunch a few numbers based on your current feed rates compared to your expected feed rates so you can predict how long it will take to recover the cost difference between the different bars.