I like them, I've had three, but currently own none!
First bass I bought was a RIC 4003 in the early 80's. Split pickguard Ruby Red. I put huge hours on that bass. At some point, it developed a rattle in the neck. I took it to many a "luthier" at the time and was told I had a broken truss rod. Now, remember in the 80's there was no internet and there were even fewer RIC knowledgeable people. I thought it best that I get rid of it.
Second RIC 4003 I bought during MF's RIC blow out a few years ago. This one was Fireglow. Right out of the RIC box after letting it sit for a day, I noticed that there were black paint spots near the output jack, that had been covered with clear coat! Also, none of the tone controls worked! At the time, I was told by folks here that I should just take it in and have the circuit looked at and repaired, on my dime! LOL Not happening and back she went.
Third RIC to replace the above would not set up. Numerous attempts by me and professional luthiers all came to the same conclusion, the neck blank was not cut correctly and there was no way to get the bass to setup, without pulling the finger board, re-planning the neck re-installing the finger board. I sold that bass on CL.
SO, would I like to have a RIC, yah, a functional one for sure, but I have spent way too much money with nothing to show for it. I contemplated getting a 4004, but after my experience with the 4003 models, I have decided that they are just not for me. I won't get into my conversation with RIC "customer service".
Fair warning for any who do want a RIC, your experience may vary!
Fishheadjoe