1. Put in a pair of EMG HB Steinberger actives - or maybe just better passives? Something easy to fit (no routing) - suggestions?
2. Get something like a Fender Downtown Express and hope that gives enough control over the sound to fix it.
I'm basically DI'ing all the time and not playing live. Just looking for any tips as to whether it's worth the hassle of changing pickups, or whether a DI/pre-amp box would be enough to get life into the sound - the Fender seems a pretty useful box for that. Looking to play funky/pop/fusion (I wish) style bass, nothing heavy.
You can do a lot with the Downtown Express. Compression for what you are doing would sound great and even out the tone a lot. Plus I've heard the DE compressor has good tone color. Throw in a little EQ to your taste and then sometimes some overdrive, and you should be pretty happy!
Like all two pickup basses, start with the neck pickup volume all the way up and then dial in bridge pickup to taste. On all my two pickup basses, I used to run both pickups wide-open all the time, but realized the tone I want is usually the neck pickup flavored with varying amounts of bridge. Moving your right hand position where you're hitting the strings changes the sound up quite a bit also.
I would not go to the expense of the EMG HBCS right away, especially if you drop the $250 or so on the Downtown Express. The EMGs drop in to the stock routing, but you need to know what you're doing to do the control wiring. The HBCS come with one volume control and one tone each, and you'll have to take the two sets apart and wire them together to have standard VVT controls. I did mine with an EMG blend pot, which is an extra expense. This is a job best given to a guitar tech.
EMG pickups *might* add to the resale value of a Spirit, but I wouldn't count on recuping what you would have into it. If you leave the bass stock, if you decide to resell it, it won't be quite as much of a loss as if you'd put the EMGs in. The Downtown Express is not highly in demand, but you could resell it as well if you sell the bass.
My 2 cents: Since you're new to bass, give yourself some time to get into playing and listening to what the bass sounds like. Don't spend a lot of money until you get yourself going and have been playing for some time.
Don't let our posts in this thread make you think that Spirits have to be modded.. they sound pretty good stock! But they were cheap, had some of the Steinberger design advantages, and made good platforms to tinker with - they are solid basses.