I guess it's a question of whether you like the "nudge and bump" fence and bit height method and making four or five "test cuts" before getting the thing done you went to the router table to do. Also depends on what you're expectations of what a router table "system" will enable you to do, or do more easily.
There are router table cuts that require fairly precise fence adjustments - case in point - lock mitered corners. If you want clean, sharp corners you must be able to move the bit and or the fence in very small, controlled increments.
If you just want to cut dadoes, rabbets/rebates or T-slots a "nudge and bump" set up is probably fine. But if you want to cut finger joints, half blind or through dovetails - that fit, then a precision positionable fence system fits the bill. If a loose, or overly tight fit of ply in a dado is ok - you probably don't need an Incra or JoinTech fence system.
There's also the question of where you're going to put all the router table related stuff - collets, wrenches, rabbet bit bearings, set up blocks etc. . Having a router cabinet with drawers - and maybe a pull out shelf or two are nice to have. Homeless stuff has a tendency to wander off and hide. But if they have a nice drawer to live in, or a dedicated space in a cabinet they tend to be easier to find - and use. "Like With Like" makes for a good filing system - and the stuff seems more comfortable hanging out with relatives.
charlie b